Police Officer (230 Days) - Police North East Independent School DistrictPolice Officer (230 Days) - PoliceSan Antonio, TXThe employee is occasionally exposed to wet and/or humid conditions, moving mechanical parts, fumes or airborne particles, toxic or caustic chemicals, extreme cold, extreme heat, risk of electrical shock, explosives, and risk of radiation. Strenuous walking, running, standing and climbing; ability to control sudden violent or extreme physical acts of others and exhibit rapid mental and muscular coordination simultaneously are essential to performing the duties required in this position.
Border Patrol Agent - Entry Level Customs and Border ProtectionBorder Patrol Agent - Entry LevelLeon Valley, TX$51,632–$92,912 / yearYou qualify for the GL-5 grade level if you possess one of the following: Experience: One (1) year of general work experience that demonstrates the ability to take charge, make sound decisions, and maintain composure in stressful situations; to learn regulations, methods, and techniques through classroom training and/or on-the-job instruction; and the ability to gather concise information through questioning, observation, and examination of documents and records; OR. Formal Training: After you are hired, you will be detailed to the U.S. Border Patrol Academy in Artesia, New Mexico, for approximately six (6) months of intensive instruction in immigration and nationality laws, law enforcement and USBP-specific operations, driver training, physical techniques, firearms, and other courses.
NewBorder Patrol Agent Entry Level - New Hire Sign-On and Retention Incentives Customs and Border ProtectionBorder Patrol Agent Entry Level - New Hire Sign-On and Retention IncentivesUniversal City, TX$51,632–$92,912 / yearExperience: One (1) year of general work experience that demonstrates the ability to take charge, make sound decisions, and maintain composure in stressful situations; to learn regulations, methods, and techniques through classroom training and/or on-the-job instruction; and the ability to gather concise information through questioning, observation, and examination of documents and records; OR. Analyze information rapidly and make prompt decisions where you will be expected to make arrests after the completion of required training and apply these skills in a law enforcement capacity such as criminal code enforcement, determining violations of laws, correctional or rehabilitation work involving criminal offenders, security, military, etc.
Emergency Response Team (ERT) Officer - Police North East Independent School DistrictEmergency Response Team (ERT) Officer - PoliceSan Antonio, TXThe employee is occasionally exposed to wet and/or humid conditions, moving mechanical parts, fumes, or airborne particles, toxic or caustic chemicals, extreme cold, extreme heat, risk of electrical shock, explosives, and risk of radiation. PRIMARY PURPOSE SUMMARY: Part of the designated emergency response law enforcement team, assigned to resolve critical incidents involving a threat to public safety which would otherwise exceed the capabilities of traditional law enforcement first responders.
Security Guard - Part Time Unarmed Patrol Allied UniversalSecurity Guard - Part Time Unarmed PatrolSan Antonio, TexasJoin Allied Universal as an unarmed patrol officer at a busy logistics and distribution location, where you will monitor and patrol assigned areas, remain visible to help discourage security-related incidents, and deliver outstanding customer service and communication. Conduct regular and random patrols throughout loading areas, trailer yards, parking areas, dock doors, and perimeter points to help to deter unauthorized activity and identify unusual conditions.
Police Officer U.S. Department of Veterans AffairsPolice OfficerSan Antonio, TX$45,409–$98,335 / yearConducts long and short term investigations to detect and apprehend individuals for violating lawsAnalyzes facts to identify suspects and develop case informationCoordinates with U.S. and other prosecuting attorneys on case development to perform arrests and prosecutionsFull range of investigative work that is typical of DetectivesProtects the civil rights of all individuals on VA controlled propertyPrevents detect and investigate crimesPatrols assigned areas on foot or by motor vehicleSubdues persons causing disturbance or who threaten harm to themselves or othersFollows rulesprocedures concerning search and seizure of evidence and contrabandObtains search and arrest warrantsArrests violatorsProvides basic first aid and CPR prior to arrival of emergency medical personnelPrepares report of activities and events that occurred during shiftPerforms traffic controlAssists citizens in emergency situations andPerforms other related duties as assigned. Relocation expenses reimbursedNo Appointment typePermanentWork scheduleFull-timeServiceCompetitivePromotion potentialNone Job family Series 0083 Police Supervisory statusNoSecurity clearanceOtherDrug testYesPosition sensitivity and riskNoncritical-Sensitive NCSModerate RiskTrust determination processCredentialingSuitabilityFitnessFinancial disclosureNoBargaining unit statusYesAnnouncement numberCARZ-12934834-26-AXS-OCAControl number865753000This job is open toHelpThe public U.S. Citizens Nationals or those who owe allegiance to the U.S. Career transition CTAP ICTAP RPL Federal employees whose job agency or department was eliminated and are eligible for priority over other applicants.
Border Patrol Agent - Experienced Customs and Border ProtectionBorder Patrol Agent - ExperiencedKirby, TX$65,545–$124,717 / yearGS-11: You qualify for the GS-11 grade level if you possess one year of specialized experience equivalent to at least the next lower grade level, with the authority granted by the state or government to enforce laws, make arrests, and investigate crimes, performing primary duties in an official law enforcement capacity such as: Utilizing intelligence information to track illegal operations, criminal activity, threats to our nation, and/or contraband while serving as a state, federal, or military law enforcement official. The above experience will be applied in connection with the following: Make arrests and exercise sound judgment in the use of firearms; deal effectively with people in a courteous manner in connection with law enforcement matters; analyze information rapidly and make prompt decisions; or develop and maintain contact with a network of informants.
PTP Security Officer (56855) Indian Head CasinoPTP Security Officer (56855)San Antonio, TXResponsible for helping your co-workers and other staff at Indian Head Casino provide each of our guests a pleasant, enjoyable experience. Nine months related experience and/or training in security/law enforcement; or equivalent combination of education and experience.
Armed Security Officer (44823) Inter-Con Security Systems, Inc.Armed Security Officer (44823)San Antonio, TXAs an Armed Security Agent Officer II you will be part of a highly trained security team that supports critical facilities and infrastructure, public venues that required an enhanced presence and personal protective services. Benefits: Inter-Con offers excellent full-time and part-time benefits that include: flexible scheduling to accommodate lifestyle commitments, vacation, sick leave, medical, dental, sponsorship for Top Secret Clearance, comprehensive training, discounts on higher education and much more.
Security Officer Tenet Healthcare CorpSecurity OfficerSan Antonio, TXOur system of care includes six full-service hospitals, a specialized childrens hospital with a dedicated pediatric emergency unit, a comprehensive cancer care network, fitness and rehabilitation centers, a physician network, imaging centers, ambulatory services and the Baptist School of Health Professions. Protect life, property, information and reputation by employing situational awareness; monitoring and securing designated entrances/exits; observing flow of employees, patients, physicians, students, vendors and visitors into the facility; verifying credentials and providing directions to authorized areas.
Security Officer Baptist Medical CenterSecurity OfficerSan Antonio, TXOur system of care includes six full-service hospitals, a specialized childrens hospital with a dedicated pediatric emergency unit, a comprehensive cancer care network, fitness and rehabilitation centers, a physician network, imaging centers, ambulatory services and the Baptist School of Health Professions. Protect life, property, information and reputation by employing situational awareness; monitoring and securing designated entrances/exits; observing flow of employees, patients, physicians, students, vendors and visitors into the facility; verifying credentials and providing directions to authorized areas.
Security Officer- Overnight with weekend availability Six Flags Entertainment CorporationSecurity Officer- Overnight with weekend availabilitySan Antonio, TexasTemporaryIt features a competitive hourly rate of $14.75 (with an additional $1 per hour for working the hours between 12am-8am) with perks such as: Free entry to any Six Flags Park for all employees and a guest with each visit, additional complimentary tickets for friends and family, discount on food and merchandise for all employees, flexible scheduling, Dayforce Wallet access for earned wage access, and bi-weekly pay. Asset Protection: Exercise vigilance and proactive measures to safeguard company assets, property, and facilities against potential threats and illegal activities, acting as a steadfast guardian of the park's resources.
Level II Security Officer (Training Provided) Six Flags Entertainment CorporationLevel II Security Officer (Training Provided)San Antonio, TexasTemporaryTeam Members enjoy a variety of perks , including free park admission for themselves and a guest, additional complimentary tickets, merchandise discounts, flexible scheduling, opportunities to access earned wages early through Dayforce Wallet, and potential career growth opportunities within the Security Department. While awaiting certification, you will gain valuable experience working as a Security Screener, learning park operations, guest interaction, and security procedures before transitioning into a fully certified Security Officer role.
Level II Security Officer (Paid Training Provided) Six Flags Entertainment CorpLevel II Security Officer (Paid Training Provided)San Antonio, TXTeam Members enjoy a variety of perks, including free park admission for themselves and a guest, additional complimentary tickets, merchandise discounts, flexible scheduling, opportunities to access earned wages early through Dayforce Wallet, and potential career growth opportunities within the Security Department. While awaiting certification, you will gain valuable experience working as a Security Screener, learning park operations, guest interaction, and security procedures before transitioning into a fully certified Security Officer role.
Security Officer Part-Time. Taser Hss IncSecurity Officer Part-Time. TaserSan Antonio, TXWhile performing the duties of this job, the employee must be able to sit, stand, and walk for variable amounts of time throughout an assigned shift; use hands to finger, handle or feel objects, tools or controls; reach with hands and arms; climb stairs; occasionally stoop, kneel, or crouch. Our Healthcare Security Officers are responsible for maintaining the security and safety of the hospital, its staff, and its patients and visitors -- and serve as a visible deterrent to illegal activities on hospital property.
Security Officer Taser Hss IncSecurity Officer TaserSan Antonio, TXWhile performing the duties of this job, the employee must be able to sit, stand, and walk for variable amounts of time throughout an assigned shift; use hands to finger, handle or feel objects, tools or controls; reach with hands and arms; climb stairs; occasionally stoop, kneel, or crouch. Our Healthcare Security Officers are responsible for maintaining the security and safety of the hospital, its staff, and its patients and visitors -- and serve as a visible deterrent to illegal activities on hospital property.
Tarian Healthcare Security Officer Taser Hss IncTarian Healthcare Security Officer TaserSan Antonio, TXWhile performing the duties of this job, the employee must be able to sit, stand, and walk for variable amounts of time throughout an assigned shift; use hands to finger, handle or feel objects, tools or controls; reach with hands and arms; climb stairs; occasionally stoop, kneel, or crouch. Our Healthcare Security Officers are responsible for maintaining the security and safety of the hospital, its staff, and its patients and visitors -- and serve as a visible deterrent to illegal activities on hospital property.
🎯 Full-Time Security Officer – La Cantera / North Star Marksman Security🎯 Full-Time Security Officer – La Cantera / North StarSan Antonio, TexasDocument all interactions in a clear and concise written report, ensuring the accuracy and timely submission of required documentation (reports/documents). Named as a nationally recognized Top Workplace in 2024 and 2025 by USA Today, Marksman's customized approach to security services will provide you with the opportunity to learn, grow and succeed.
Security Officer Northeast Baptist HospitalSecurity OfficerSan Antonio, TXOur system of care includes six full-service hospitals, a specialized childrens hospital with a dedicated pediatric emergency unit, a comprehensive cancer care network, fitness and rehabilitation centers, a physician network, imaging centers, ambulatory services and the Baptist School of Health Professions. Protect life, property, information and reputation by employing situational awareness; monitoring and securing designated entrances/exits; observing flow of employees, patients, physicians, students, vendors and visitors into the facility; verifying credentials and providing directions to authorized areas.
SUPERVISORY POLICE OFFICER United States Air ForceSUPERVISORY POLICE OFFICERFort Sam Houston, TX$62,629–$81,423 / yearExperience may have been gained in work on a police force; through service as a military police officer; in work providing visitor protection and law enforcement in parks, forests or other natural resource or recreational environments; in performing criminal investigative duties; or in other work that provided the required knowledge and skills. ACTIVE DUTY SERVICE MEMBERS: The VOW Act requires federal agencies to treat an eligible active duty service member as a veteran, disabled veteran, and preference eligible (as applicable) when applying for civil service positions before the effective release or discharge date.
Security Officer - Healthcare Part Time Allied UniversalSecurity Officer - Healthcare Part TimeSan Antonio, TXAs an unarmed Patrol Officer in a healthcare location, you will conduct routine patrols, maintain a visible presence to help deter incidents, and support a welcoming environment for patients, visitors, and staff. Conduct regular and random unarmed patrols throughout the healthcare location, including building interiors, parking areas, entrances, and perimeter areas, to help deter unauthorized activity.
Cleared Armed Security Officer - DOD Clearance Required Allied UniversalCleared Armed Security Officer - DOD Clearance RequiredSan Antonio, TXAs an Armed Patrol Officer at a leading aerospace and defense location, you will monitor and patrol assigned areas, maintain a visible presence to help deter security-related incidents, and respond professionally to site needs. Conduct regular and random armed patrols of facilities, aircraft-adjacent areas, parking areas, restricted zones, and perimeter locations to help deter unauthorized activity.
Armed Security Officer - Utility Headquarters Allied UniversalArmed Security Officer - Utility HeadquartersSan Antonio, TXJoin Allied Universal as an armed patrol officer at a vital utilities location, where you will monitor and patrol assigned areas, stay visible to help discourage security-related incidents, and support daily operations through strong customer service and communication. Support emergency and incident response by communicating with site personnel, first responders, and/or Allied Universal teams, helping to protect people, property, and critical infrastructure during changing conditions.
Lead Security Officer DSI Security ServicesLead Security OfficerSan Antonio, TexasLead Security Officer Company Overview DSI Security Services is a leading provider of contract security solutions, serving clients across multiple industries nationwide. As a Lead Security Officer, you will help maintain a safe and secure environment for our clients, their employees, and the public while assisting with daily site operations and officer oversight.
Security Guard Flex - Part Time Patrol Armed Allied UniversalSecurity Guard Flex - Part Time Patrol ArmedSan Antonio, TexasAs a Security Guard - Part Time Patrol Armed in San Antonio, TX , this role is designed to provide reliable, consistent hours at an assigned site with the flexibility for you to earn more by picking-up additional shifts when it works for you. Conduct regular and random armed patrols throughout the location, including sales floors, entry points, parking areas, loading zones, and perimeter locations, helping to deter unauthorized activity and/or policy violations.
Security Officer / Customer Service North America Security & Select ServicesSecurity Officer / Customer ServiceSan Antonio, Texas5- Security officers with a valid and active driver’s license may be asked to operate company vehicles at various locations as part of their scope of work. Security Officer helps maintain a safe and secure environment by actively monitoring and patrolling the site premises.
Full Time Temporary Security Officers North America Security & Select ServicesFull Time Temporary Security OfficersSan Antonio, Texas5- Security officers with a valid and active driver’s license may be asked to operate company vehicles at various locations as part of their scope of work. Security Officer helps maintain a safe and secure environment by actively monitoring and patrolling the site premises.
Hiring Licensed Security Officers – San Antonio – Start ASAP North America Security & Select ServicesHiring Licensed Security Officers – San Antonio – Start ASAPSan Antonio, Texas5- Security officers with a valid and active driver’s license may be asked to operate company vehicles at various locations as part of their scope of work. Security Officer helps maintain a safe and secure environment by actively monitoring and patrolling the site premises.
Full Time Temporary Security Officers, must be licensed North America Security & Select ServicesFull Time Temporary Security Officers, must be licensedSan Antonio, Texas5- Security officers with a valid and active driver’s license may be asked to operate company vehicles at various locations as part of their scope of work. Security Officer helps maintain a safe and secure environment by actively monitoring and patrolling the site premises.
Temporary Position- Hiring Licensed Security Officers – San Antonio – Start ASAP North America Security & Select ServicesTemporary Position- Hiring Licensed Security Officers – San Antonio – Start ASAPSan Antonio, Texas5- Security officers with a valid and active driver’s license may be asked to operate company vehicles at various locations as part of their scope of work. Security Officer helps maintain a safe and secure environment by actively monitoring and patrolling the site premises.
Hotel Security / Loss Prevention Officer - On Call Hyatt Hotels CorpHotel Security / Loss Prevention Officer - On CallSan Antonio, TXShare Hotel Security / Loss Prevention Officer - On Call on LinkedIn Tweet Hotel Security / Loss Prevention Officer - On Call Share Hotel Security / Loss Prevention Officer - On Call on Facebook Share Hotel Security / Loss Prevention Officer - On Call via Email. The Loss Prevention Officer plays a vital role in preventing theft and keeping the hotel guests, customers, and colleagues safe.
Security Officer - Mid Shift (11:00pm to 7:30am) United Parks & Resorts IncSecurity Officer - Mid Shift (11:00pm to 7:30am)San Antonio, TXYou will serve in a number of key roles providing the professional demeanor and reassuring presence that gives guests and ambassadors peace of mind and enhances their overall park experience. Work as Security Lead Officer or Officer in Charge (OIC) in the absence of an on-site supervisor.
SECURITY OFFICER - Seasonal Retama ParkSECURITY OFFICER - SeasonalSelma, TexasTemporaryEscorts and transports funds for table fills, slots, and/or banks; provides security for kiosk add fills and money drops to include tables and slots; provides escorts in sensitive areas for all non-gaming team members (e.g., maintenance, repair companies, and/or cleaning personnel). We’ve grown to become the leading provider of integrated entertainment, sports content, and casino gaming experiences thanks to our 43 destinations across North America, online sports betting and iCasino via theScore Bet Sportsbook and Casino®.
Security Officer - Mid Shift (11:00Pm To 7:30Am) United Parks & Resorts IncSecurity Officer - Mid Shift (11:00Pm To 7:30Am)San Antonio, TXYou will serve in a number of key roles providing the professional demeanor and reassuring presence that gives guests and ambassadors peace of mind and enhances their overall park experience. Work as Security Lead Officer or Officer in Charge (OIC) in the absence of an on-site supervisor.
Security Officer - Day Shift (7:00Am To 3:30Pm) United Parks & Resorts IncSecurity Officer - Day Shift (7:00Am To 3:30Pm)San Antonio, TXYou will serve in a number of key roles providing the professional demeanor and reassuring presence that gives guests and ambassadors peace of mind and enhances their overall park experience. Work as Security Lead Officer or Officer in Charge (OIC) in the absence of an on-site supervisor.
SECURITY OFFICER Seasonal PENN Entertainment IncSECURITY OFFICER SeasonalTXEscorts and transports funds for table fills, slots, and/or banks; provides security for kiosk add fills and money drops to include tables and slots; provides escorts in sensitive areas for all non-gaming team members (e.g., maintenance, repair companies, and/or cleaning personnel). We've grown to become the leading provider of integrated entertainment, sports content, and casino gaming experiences thanks to our 43 destinations across North America, online sports betting and iCasino via theScore Bet Sportsbook and Casino.
Security Officer - Swing Shift (3:00Pm To 11:30Pm) United Parks & Resorts IncSecurity Officer - Swing Shift (3:00Pm To 11:30Pm)San Antonio, TXYou will serve in a number of key roles providing the professional demeanor and reassuring presence that gives guests and ambassadors peace of mind and enhances their overall park experience. Work as Security Lead Officer or Officer in Charge (OIC) in the absence of an on-site supervisor.
Security Officer - Auto Auction Facility Allied UniversalSecurity Officer - Auto Auction FacilitySan Antonio, TXAs an Unarmed Patrol Officer at a dynamic technology, media, and telecommunications location, you will conduct routine patrols, operate a vehicle as part of this driving post, monitor access points, and help deter security-related incidents through a visible presence. What You'll Do: Provide customer service to employees, visitors, and vendors at a technology, media, and telecommunications location by carrying out security-related procedures, site-specific policies, and emergency response activities when appropriate.
Security Officer Armed - Retail Center Allied UniversalSecurity Officer Armed - Retail CenterSan Antonio, TXJoin Allied Universal as an armed patrol officer at a busy retail location, where you will drive through assigned areas, conduct routine patrols, remain visible to help deter security-related incidents, and deliver outstanding customer service. Monitor entrances, exits, and high-traffic areas to observe customer and employee activity, assist with access-related concerns, and/or document security-related incidents.
Loss Prevention Clerk/Off Duty Officer - Part Time Buc-eesLoss Prevention Clerk/Off Duty Officer - Part TimeNew Braunfels, TXThe primary job of Loss Prevention is to protect assets by ensuring compliance with internal control procedures, and regulations through store inspections and supervision of assigned employees. Secure premises and personnel by patrolling property, monitoring surveillance equipment; inspecting buildings, equipment, and access points; permitting entry.
Security Officer DSI Security ServicesSecurity OfficerSan Antonio, TexasOur focus on integrity, teamwork, and continuous improvement allows us to build long-term partnerships with clients while providing meaningful career opportunities for our employees. Security Officer Company Overview DSI Security Services is a leading provider of contract security solutions, serving clients across multiple industries nationwide.
Security Officer Virtual Hiring Event 7/29/2026 Securitas Security Services USA IncSecurity Officer Virtual Hiring Event 7/29/2026San Antonio, TXThe Security Officer position helps maintain a safe and secure environment for our clients by actively monitoring the premises, including patrolling a variety of locations. If you have retail, food service or hospitality industry background you are a great fit for this role; if not, we will provide you with the training and everything you need for a great introduction to a career in the security industry.
Loss Prevention Officer (Hotel Emma) Hotel EmmaLoss Prevention Officer (Hotel Emma)San Antonio, TXMust immediately notify the manager on duty of any accident or incident involving a guest or hotel vehicle, communicate within 48 hours of any moving violation or driving accident whether on or off the job, and provide immediate notification of any change in Texas driver license status and/or health status that may affect driving ability, including corrective lens requirements, name changes, or medication-related limitations. Communication: Strong English communication skills, both spoken and written, with the ability to interact clearly and professionally with guests, residents, service partners, property management teams, team members, and leadership.
Security Officer Hiring Event 7/9/2026 Securitas Security Services USA IncSecurity Officer Hiring Event 7/9/2026Castroville, TXThe Security Officer position helps maintain a safe and secure environment for our clients by actively monitoring the premises, including patrolling a variety of locations. If you have retail, food service or hospitality industry background you are a great fit for this role; if not, we will provide you with the training and everything you need for a great introduction to a career in the security industry.
Security Officer Mission Trail Baptist HospitalSecurity OfficerSan Antonio, TXProtect life, property, information, and reputation by employing situational awareness; monitoring and securing designated entrances/exits; observing the flow of employees, patients, physicians, students, vendors, and visitors into the facility; verifying credentials, and providing directions to authorized areas. Respond immediately, or as the appropriate, to emergency/unusual situations including disturbances, disruptive employees, patients, vendors & visitors, fires, and medical emergencies (i.e., including, but not limited to restraining agitated patients in accordance with Tenet Corporate Security and facility policy).
Response Security Officer GardaworldResponse Security OfficerSan Antonio, TXGardaWorld Security is a global champion in sophisticated and tailored security solutions, employing and training highly skilled and dedicated professionals across the globe. This policy applies to all terms and conditions of employment including, but not limited to hiring, placement, assignment, promotion, termination, layoffs, recalls, transfers, leaves of absence, compensation, and training.
Security Officer (Full-Time) Hyatt Hotels CorpSecurity Officer (Full-Time)San Antonio, TXas required\n \n\n Conduct regular floor patrols, cash counts and crowd control\n \n\n Maintain computer records of all actions in a Daily Activity Report\n \n\n* Assist guests regarding hotel facilities in an informative and helpful way\n \n\n \nAbout Our Resort\n \nNestled on 300 acres of historic ranch land, our resort offers a vibrant blend of relaxation and recreation. \nKey Responsibilities include, but are not limited to:\n\n Ensure the overall safety and security of the hotel guests, Colleagues and hotel premises\n \n\n Act as a member of the Emergency Response Team, responding in cases of fire, accident, safety concerns and calls for medical assistance\n \n\n Investigate and report any violations to law or hotel policy\n \n\n Provide First Aid and C.P.R.
Tarian Healthcare Security Officer (Taser) TarianTarian Healthcare Security Officer (Taser)San Antonio, TexasWhile performing the duties of this job, the employee must be able to sit, stand, and walk for variable amounts of time throughout an assigned shift; use hands to finger, handle or feel objects, tools or controls; reach with hands and arms; climb stairs; occasionally stoop, kneel, or crouch. Our Healthcare Security Officers are responsible for maintaining the security and safety of the hospital, its staff, and its patients and visitors -- and serve as a visible deterrent to illegal activities on hospital property.
Security Officer/Customer Service North America Security & Select ServicesSecurity Officer/Customer ServiceSan Antonio, TexasWrite reports of daily activities and irregularities, such as equipment or property damage, theft, presence of unauthorized persons, or unusual occurrences. Monitor and authorize entrance and departure of employees, visitors, and other persons to guard against theft and maintain security of premises.
Security Officer/ Customer Service North America Security & Select ServicesSecurity Officer/ Customer ServiceSan Antonio, TexasResponsibilities: Monitor and authorize entrance and departure of employees, visitors, and other persons to guard against theft and maintain security of premises. Answer telephone calls to take messages, answer questions, and provide information during non-business hours or when switchboard is closed.