I-STEP's mission is to enable development and integration of risk-based, intelligence-driven exercises, training, and security planning solutions in collaboration with security partners to reduce risks to critical transportation infrastructure, including Freight Rail, Mass Transit, and Highway & Motor Carrier, Pipeline, and Aviation sectors. Provide program management services and assist in the overall management, enhancements, expansions, training, exercise design modifications, exercise conduct procedures, evaluations methodology, the overall monitoring of the program, risk-based security planning, and other related tasks.