EHS Engineer Johnson Controls International PlcEHS EngineerBurlington, MA$85,000–$127,800 / yearJohnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education. Additionally, you will partner cross-functionally to support facility expansions and equipment installations through EHS design reviews, lead incident investigations, manage hazardous materials, and deliver comprehensive training programs to maintain a safe, compliant, and collaborative manufacturing environment.
Facilities Engineer Johnson Controls International PlcFacilities EngineerBurlington, MA$76,100–$114,100 / yearJohnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education. This role is responsible for ensuring safe, reliable, and efficient operation of all building systems while partnering closely with production, manufacturing and engineering teams to support current operations and future growth.
Quality Engineer Johnson Controls International PlcQuality EngineerBurlington, MA$76,100–$114,100 / yearJohnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education. Alloy is looking for a Quality Engineer that will participate in all aspects of creating and operating a Quality Management system capable of processing volume orders from customers while working with all departments to maintain ISO 9001 certification.
Principal Electronics Engineer (onsite) Johnson Controls International PlcPrincipal Electronics Engineer (onsite)Westford, MA$130,000–$150,000 / yearJohnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education. Work may include analog design, embedded system designs, small signal and instrumentation circuitry, switch mode power supplies, front panel user interfaces, audio amplifiers, peer-to-peer networking, linear power supplies, sensors and detectors, and fiber optics.
Network Engineer Abacus TechnologyNetwork EngineerHanscom AFB, MassachusettsDiagnose data troubles, open and route trouble tickets and handle customer support cases with third party subject matter experts through tier 3 contracted support constructs and ensure proper and timely resolutions. Experience with upgrading software on network infrastructure hardware, AAA servers for device/user authentication, SNMPv3, Syslog and Network Monitor tools.
Software Engineer DataServ (US)Software EngineerNorth Andover, MA$90,000–$100,000 / yearIn this role, you will design and deliver scalable, high-performance solutions across the full application stack - from API gateways and identity management - to relational and analytics databases - to modern frontend interfaces. Database Management: Work effectively with SQL Server, PostgreSQL, and ClickHouse - writing efficient queries, understanding execution plans, and collaborating with the DBA on schema and performance considerations.
NewHVAC Building Controls Systems Engineer Johnson Controls International PlcHVAC Building Controls Systems Engineerlynnfield, MAAssociate or Technical degree, three years of related technical relevant work experience required; or equivalent work experience (with no degree) as a commercial HVAC Controls Technician, Engineer, or Installer. Demonstrated knowledge of control theory, automatic temperature controls, building automation systems and other building subsystems from a design, installation, and/or commissioning perspective.
NewOperations Quality Engineer II RTX CorpOperations Quality Engineer IIAndover, MAEngage MFG Defect Prevention teams to ensure alignment on top priorities (using baseline data and future forecast) to drive containment, Root Cause Analysis and associated Corrective Action Implementation. Baseline factory metrics (Scrap, Rework, FPY, etc.), identify top drivers, forecast future demand for top drivers and identify areas of opportunity for improvement.
Controls Engineer Trane Technologies PlcControls EngineerBedford, NH$65,200–$118,860 / yearWhat you will bring: Degree in Electrical/Mechanical Engineering, Construction or Engineering Technology, or other related areas; or three (3) plus years of experience in the HVAC industry performing project management or estimating roles; or an equivalent combination of education and work experience. Thrive at work and at home: Benefits kick in on DAY ONE for you and your family, including health insurance and holistic wellness programs that include generous incentives - WE DARE TO CARE!
UX/UI Engineer Mitre CorpUX/UI EngineerBedford, MA$129,200–$161,500 / yearRoles & Responsibilities: The successful candidate will be expected to: Collaborate with human factors engineers, UX designers, researchers, project leaders, and sponsors to design and develop user-centered software solutions using modern front-end technologies and engineering best practices. As part of the Software Engineering Innovation Center, you will strengthen your software architecture and engineering skills while designing human-centered, user-focused computing capabilities that address the challenges of our sponsors and deliver meaningful, effective user experiences.
Program Quality Engineer - Andover or Tewksbury, MA RTX CorpProgram Quality Engineer - Andover or Tewksbury, MAAndover, MADrive Quality tasks, participate in design reviews, CCB sign offs, qualification planning, flight test walk ups, IR (Independent Reviewer), and trade study in support of ESM tasking. Raytheon is seeking an LTAMDS (Lower Tier Missile Defense Sensor) Program Quality Engineer (PQE) within Land and Air Defense Systems (LADS) at our Tewksbury, MA and Andover, MA locations.
Transportation Senior Continuous Improvement Engineer (remote) Ryder System IncTransportation Senior Continuous Improvement Engineer (remote)Concord, NHRemoteCompensation Information: The compensation offered to a candidate may be influenced by a variety of factors, including the candidate's relevant experience; education, including relevant degrees or certifications; work location; market data/ranges; internal equity; internal salary ranges; etc. Effective facilitation and execution Value Stream Maps & Kaizen Events through all stages (A3 charter ideation / creation, pre-work identification and completion, delivery of results in Kaizen week, regular follow up and follow through on sustainment).
Sr. Cloud & Mobile Security Engineer iRobot CorpSr. Cloud & Mobile Security EngineerBedford, MA$107,000–$152,500 / yearThe responsibilities will require a mix of partnering with development teams to assess new designs for potential security issues, and designing and building centralized security services, test frameworks, and integrated testing tools for use in automated build pipelines. iRobot is in immediate need of a Senior Engineer on its Product Security team who is experienced in applying security best practices and principles to the design, development, and maintenance of AWS Managed Service architecture, and to the mobile applications written for the most common platforms and languages.
Senior Quality Engineer Anduril Industries IncSenior Quality EngineerLexington, MA$146,000–$194,000 / yearWorking knowledge of Quality core tools such as Failure Modes and Effects Analysis (FMEA), Root Cause and Corrective Action (RCCA/8D), Change Management, Advanced Product Quality Planning (APQP), Production Part Approval Process (PPAP) and Geometric Dimensioning and Tolerancing (GD&T). To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
Senior Manufacturing Quality Engineer Anduril Industries IncSenior Manufacturing Quality EngineerLexington, MA$146,000–$194,000 / yearWorking knowledge of Quality core tools such as Failure Modes and Effects Analysis (FMEA), Root Cause and Corrective Action (RCCA/8D), Change Management, Advanced Product Quality Planning (APQP), Production Part Approval Process (PPAP) and Geometric Dimensioning and Tolerancing (GD&T). Work cross-functionally to define and execute the product roadmap, partnering with production to ensure incoming material inspection, process control plans and end of line tests capture the essential quality requirements for successful customer shipments.
Senior Mechanical Design Engineer RTX CorpSenior Mechanical Design EngineerTewksbury, MATeaming/Communication: Collaborate with cross-functional teams including other engineering disciplines, operations, supply chain, quality, and external suppliers to resolve technical challenges and develop effective design solutions. Lead small teams utilizing strong mechanical hardware design experience and knowledge in a fast-paced collaborative environment with ruggedized structures, interconnects, cooling, electronics packaging, tooling and/or array integration.
Agile Release Train Engineer RTX CorpAgile Release Train EngineerWoburn, MAThese departments provide subject matter expertise for concept development, architectural design, requirements generation & flow-down, modeling and simulation, systems analysis, software development, integration, test, and evaluation of world-class, Missile Defense & Sensor Systems to be achieved through our people, processes, technology, and performance. As a Release Train Engineer (RTE), you will be working as part of the leadership team of a agile engineering team alongside the Chief Product Owner (CPO) and Cross Product Team (CPT) leads.
Senior Mechanical Engineer RTX CorpSenior Mechanical EngineerTewksbury, MAHelp create the definitions of mechanical outline and construction details, component selection and specification, mechanical and assembly drawings, electrical/RF layout, and delivering the final technical data package. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience or an advanced degree in a related field and minimum 3 years' experience.
Laser Test Engineer Anduril Industries IncLaser Test EngineerLexington, MA$98,000–$130,000 / yearThis third-party service provider provides risk-intelligence services that may include analysis of sanctions and watchlists, adverse media, public-record information, and other lawful open-source or commercial data sources. To ensure your safety and help you navigate your job search with confidence, please keep the following critical points in mind: No Financial Requests: Anduril will never solicit payment or demand personal financial details (such as banking information, credit card numbers, or social security numbers) at any stage of our hiring process.
Production Application Engineer - Building Automation Trane Technologies PlcProduction Application Engineer - Building AutomationManchester, NH$72,611.66–$101,394.99 / yearYour primary objective is to support the hardware team in designing, configuring, testing, delivering, and maintaining hardware products, whether being newly installed or already deployed in the field. Our team-including BrainBox AI, Nuvolo, and more-combines technical expertise with advanced analytics to create data-driven solutions that add real value for customers, communities, and the planet.
Senior Industrial Engineer Entegris IncSenior Industrial EngineerBedford, MA$91,000–$114,000 / yearThis role is responsible for improving overall equipment effectiveness (OEE), optimizing labor and material utilization, and enhancing production systems through LEAN methodologies and digital transformation. This individual will work cross-functionally to identify inefficiencies, implement sustainable improvements, and develop scalable processes that support both current operations and future growth.
Senior SATCOM Engineer Mitre CorpSenior SATCOM EngineerBedford, MA$118,000–$147,500 / yearExpertise in all or most of the following technology areas: satellite communications systems (including pLEO and MEO/GEO), mesh networking, edge computing platforms, cyber security solutions, network resiliency, and software-defined networking (SDN). Roles & Responsibilities: Specific duties will vary by project but will generally include a combination of research, design, analysis, testing, experimentation, modeling & simulation, and emulation of communications networks to solve our nations most complex problems.
Biomedical Engineer (Clinical Specialist) BrainLAB Ltd.Biomedical Engineer (Clinical Specialist)Burlington, MA$65,000–$75,000 / yearWork closely with the Application Consultant, Area Account Manager, and Marketing Manager on market transparency, upgrade initiatives, demo/evaluations, and Research & Development (R&D) projects. Educate/train physicians and hospital personnel, including OR staff, Radiology, Central Sterile Processing, Biomedical and Information Technologies staff, on the use of Image Guided Surgery (IGS) products and services.
Senior Satcom Engineer The MITRE CorporationSenior Satcom EngineerBedford, MA$118,000–$147,500 / yearExpertise in all or most of the following technology areas: satellite communications systems (including pLEO and MEO/GEO), mesh networking, edge computing platforms, cyber security solutions, network resiliency, and software-defined networking (SDN). Roles & Responsibilities: Specific duties will vary by project but will generally include a combination of research, design, analysis, testing, experimentation, modeling & simulation, and emulation of communications networks to solve our nation's most complex problems.
Senior Principal Systems Engineer - Test Lead RTX CorpSenior Principal Systems Engineer - Test LeadAndover, MA$132,400–$251,600 / yearTypically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience Experience with systems engineering, system integration, system verification, and/or system test Experience leading technical teams including managing cost, schedule and quality Ability to obtain Interim Secret U.S. government issued security clearance is required prior to start date with the ability to obtain a Final Secret U.S. government issued security clearance after start. Provides direction over the integration & test team supporting multiple NASAMS contracts - includes the planning, development and review of test procedures, and execution of test events Identify resources required for execution of test events Responsible for partnering test and validation approach with program management and external customers International travel up to 20% including, but not limited to, travel to Norway for test Regular travel between Raytheon locations in Massachusetts and Southern New Hampshire is required.
NewManufacturing Engineer II - 2nd Shift RTX CorpManufacturing Engineer II - 2nd ShiftAndover, MAAs part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.
Sr Quality Engineer Katalyst Healthcares & Life SciencesSr Quality EngineerDanvers, MAEducation & Experience: Bachelor's Degree in Engineering, Science or technical field AND 5–7 years of work experience in Engineering and/or Quality OR Advanced Degree in Engineering, Science or technical field AND 2 years of work experience in Engineering and/or Quality. Utilize quality tools including risk analysis (FMEA), statistical techniques including Six Sigma and DOE (Design of Experiments), root cause analysis, and reading and correcting drawings.
NewPrincipal Systems Engineer, SEIT Lead RTX CorpPrincipal Systems Engineer, SEIT LeadTewksbury, MAThe successful candidate will be responsible for driving execution and efficient engineering practices across development, production, and sustainment programs for Air Base Air Defense and reports directly to the ABAD Program Manager. This role requires strong technical expertise and engineering leadership skills to drive the integration, test, and sustainment of a world-class air defense system.
NewTest Engineer II - 3rd Shift RTX CorpTest Engineer II - 3rd ShiftAndover, MARTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills. Interact with Test Operators, Quality Engineering, Process Engineering, and operations staff to support production testing, requiring effective organizational, verbal, and written communication skills.
Principal Systems Engineer, Product Owner - AN/TPY-2 RTX CorpPrincipal Systems Engineer, Product Owner - AN/TPY-2Woburn, MAAt RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.
Principal Systems Engineer - Test Lead RTX CorpPrincipal Systems Engineer - Test LeadAndover, MAQualifications You Must Have: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience Experience with systems engineering, system integration, system verification, and/or system test Experience managing cost, schedule and quality for technical projects Ability to obtain Interim Secret U.S. government issued security clearance is required prior to start date with the ability to obtain a Final Secret U.S. government issued security clearance after start. What You Will Do: Provides direction over the integration & test team supporting NASAMS contracts - includes the planning, development and review of test procedures, and execution of test events Identify resources required for execution of test events Responsible for partnering test and validation approach with program management and external customers International travel up to 20% including, but not limited to, travel to Norway for test Regular travel between Raytheon locations in Massachusetts and Southern New Hampshire is required.
Associate Electric Engineer - Design Unitil CorpAssociate Electric Engineer - DesignExeter, NHUnitil is committed to creating an inclusive environment that welcomes and values the differences among all of our employees, customers, suppliers and the communities in which we live and conduct business. Maintain documentation; Process data requests; Provide technical assistance and training; Provide the highest level of service to internal and external customers, stakeholders, etc.
Associate Electric Engineer - Distribution Unitil CorpAssociate Electric Engineer - DistributionExeter, NHPerform analysis of the power delivery system and studies of system development alternatives; Evaluate performance; Identify and recommend modifications to meet corporate objectives for safety, reliability, economy and efficiency. Provide technical assistance and training to personnel in other departments; Promote positive working relationships and provide the highest level of service to internal and external customers.
F-35 Field Service Engineer (Onsite) BAE Systems PlcF-35 Field Service Engineer (Onsite)Manchester, NHfor description visit the url https://jobs.baesystems.com/global/en/job/BAE1US123011BREXTERNAL/F-35-Field-Service-Engineer-(Onsite ).
Principal Software Engineer RTX CorpPrincipal Software EngineerTewksbury, MAExperience with Network Communication Protocols, Shell Scripting (tcsh, csh, bash), software development tools like Git/Clearcase, software debuggers, and using embedded RTOSs (e.g. Engineering/Other Technical Positions: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 8 years of prior relevant experience unless prohibited by local laws/regulations.
Technical Writer StratAcuity Staffing Partners IncTechnical WriterActon, MARemoteIn terms of professional development, Everforth Apex hosts an on-demand training program, provides access to certification prep and a library of technical and leadership courses/books/seminars once you have 6+ months of tenure, and certification discounts and other perks to associations that include CompTIA and IIBA. Job Description: Apex Systems is a world class technology services business that incorporates industry or insights and experience to deliver solutions that fulfill our clients' digital visions.
Software Engineer III (Cybersecurity Test Engineering, Post-Market Security) WerfenSoftware Engineer III (Cybersecurity Test Engineering, Post-Market Security)Bedford, Massachusetts$110,000–$140,000 / yearFull timeEducation : Associates Degree plus typically 4 to 10 years of related experience or Bachelor’s Degree plus typically 4 to 8 years of related experience or Master’s Degree plus typically 2 to 6 years of related experience or waiver based on experience. The ideal candidate for this position will exhibit the following skills and capabilities: Expertise in penetration testing tools (e.g., Nessus, Metasploit, Burp Suite) and fuzzing tools (e.g., Peach, AFL).
Principal Design Quality Engineer Katalyst Healthcares & Life SciencesPrincipal Design Quality EngineerLawrence, MAProvides input to design and manufacturing engineering project DHF deliverables including material specifications, drawings, inspection procedures, and manufacturing procedures, to ensure that the resulting products can be adequately manufactured and tested. Summary: Participate in the New Product Development (NPI) and design changes, Design History File (DHF) and Device Master Record (DMR) reviews meetings and fully understand the design control process and Quality Engineering.
QA Engineer (Business Systems & Order Management) (US REMOTE) Motorola Solutions IncQA Engineer (Business Systems & Order Management) (US REMOTE)NHRemote$80,000–$95,000 / yearEnvysion''s cloud-based solution integrates video systems with sales data to proactively identify potentially fraudulent transactions and optimize operations without the need to monitor hours of video footage. Envysion, a Motorola Solutions company, is a leading provider of enterprise video security and business analytics solutions for the quick-service restaurant and retail industries.
Senior Principal System Safety Engineer RTX CorpSenior Principal System Safety EngineerWoburn, MAAs part of our commitment to maintaining a secure hiring process, candidates may be asked to attend select steps of the interview process in-person at one of our office locations, regardless of whether the role is designated as on-site, hybrid or remote. RTX considers several factors when extending an offer, including but not limited to, the role, function and associated responsibilities, a candidate's work experience, location, education/training, and key skills.
Lead AI and Decision Engineer Mitre CorpLead AI and Decision EngineerBedford, MA$174,000–$217,500 / yearWe are specifically looking for talent in machine learning (including deep learning and reinforcement learning), and one or more of the following technical areas: large language models (LLM), generative and agentic AI, decision science, human-centered AI, human-machine teaming, cognitive science, AI testing and evaluation, multi-agent systems, knowledge-based reasoning, automated planning, semantics, and ontologies. Hands-on experience with machine learning (including deep learning and reinforcement learning), and one or more of the following technical areas: large language models (LLM), generative and agentic AI, decision science, human-centered AI, human-machine teaming, cognitive science, AI testing and evaluation, multi-agent systems, knowledge-based reasoning, automated planning, semantics, and ontologies.
Generative AI Engineer Mitre CorpGenerative AI EngineerBedford, MA$121,600–$152,000 / yearBasic Qualifications: Requires a minimum of 2 years of related experience with a Bachelor's degree in computer science, engineering, computational linguistics, or related disciplines; or a Master's degree; or equivalent combination of related education and work experience. The department maintains deep expertise in large language models, agentic AI, autonomous AI workflows and data processing pipelines, computational linguistics, knowledge graph construction, identity resolution and AI/GenAI evaluation.
Senior Electrical Engineer (PE) Barry-Wehmiller Companies IncSenior Electrical Engineer (PE)Concord, NH$120,000–$160,000 / yearBy blending people-centric leadership with disciplined operational strategies and purpose-driven growth, Barry-Wehmiller has become a $3 billion organization with nearly 12,000 team members united by a common belief: to use the power of business to build a better world. Rooted in our distinct culture of Truly Human Leadership, we cultivate the leaders who will define tomorrow and partner with our clients in the food & beverage, life sciences, industrial, and advanced technology industries to build the future of manufacturing and technology.
NewSr. Principal Software Engineer RTX CorpSr. Principal Software EngineerPelham, NHThe Missile Defense Sensors (MDS) software department within Raytheon is looking for a Senior Principal Software Engineer to join the National Advanced Surface-to-air Missile (NASAMS) program. At RTX, the world's largest aerospace and defense company, 185,000 great minds are united by purpose and inspired to make a difference solving the world's most complex problems.
5th Shift Deposition Process Support Engineer RTX Corp5th Shift Deposition Process Support EngineerAndover, MADaily duties include engineering support and training for manufacturing personnel, reviewing lots and wafers requiring special disposition, failure analysis of tools and processes, supporting work center leads in tool and process qualification efforts, looking for ways to reduce rework and scrap, and looking for ways to increase efficiency in the process line. This opportunity is to join the deposition processes production work center working on gallium arsenide, gallium nitride, and III-V focal plane array fabrication within the RF Microelectronics/Module Design & Foundry Services (RFMicro) Department.
Senior Principal Mechanical Engineer LTAMDS Radar Product Lead RTX CorpSenior Principal Mechanical Engineer LTAMDS Radar Product LeadTewksbury, MAMaintain effective relationships with internal technical and programmatic stakeholders, including the IPT Leads, Operations & Supply Chain, Quality, Lifecycle Engineering, Chief Engineers, and Engineering Finance. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience or an advanced degree in a related field and minimum 7 years' experience.
Senior Principal Engineer Program Lead - GhostEye Radar RTX CorpSenior Principal Engineer Program Lead - GhostEye RadarTewksbury, MATypically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 10 years of prior relevant experience or an advanced degree in a related field and minimum 7 years' experience. You will be responsible for overseeing program execution across multiple products, ensuring alignment with challenging schedules while effectively planning, managing, and tracking cost and schedule performance.
Sr Semiconductor Foundry Engineer RTX CorpSr Semiconductor Foundry EngineerMAAn exciting opportunity exists for experienced semiconductor processing engineers to join our III-V foundry team at the RF Microelectronics/Module Development & Foundry Services department at Raytheon in Andover, MA. Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and a minimum of 5 years of prior relevant experience or an Advanced Degree in a related field and minimum 3 years experience.
Lead Crypto Engineer Mitre CorpLead Crypto EngineerBedford, MA$158,800–$198,500 / yearOur Crypto and Trusted Systems Engineering team provides critical mission assurance by developing cryptographic and resilient solutions for the warfighter while our Resilient Engineering groups focus on ensuring our weapons systems and infrastructure can "fight through" the evolving and persistent cyber threat through a combination of cyber security, resilient design, and enhanced cyber situational awareness. Basic Qualifications: Typically requires a minimum of 8 years of related experience with a Bachelor's degree or 6 years and a Master's degree; or a PhD with 3 years' experience; or equivalent combination of related education and work experience.
Principal System Safety Engineer RTX CorpPrincipal System Safety EngineerTewksbury, MARaytheon's System Safety / Human System Integration (HSI) Department ensures product safety by identifying hazards, assessing risks, and implementing solutions to protect people, hardware, and the environment. Manage safety considerations across all lifecycle phases, including design, integration/testing, flight test, production, field operations, returns, demilitarization, and disposal.