Exercise Information System or EXIS is the Transportation Security Administration's (TSA) premier online exercise tool that guides government and industry users through the exercise planning process and provides resources to design, document, and evaluate exercises for all transportation modes. EXIS enables security professionals to collaborate and communicate through discussions, shared information, and critical lessons learned. EXIS is managed by the Intermodal Security Training and Exercise Program (I-STEP) and is the only exercise tool specifically tailored to the transportation industry.