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• What We Do
• Grants
• Law Enforcement
• Layers of Security
• Air Cargo
• Alien Flight Student Program
• Behavior Detection
• Employee Screening
• HAZMAT Endorsement Threat Assessment Program
• I-STEP
• Rail Security
• Secure Flight
• Transportation Worker Identification Credential Program
• Travel Document Checker
• Screening Partnership Program
• Security Screening
• Transportation Sector Network Management
• Reimbursable Agreements

Background Information

Layers of Security – I-STEP

I-STEP Materials

• Overview of I-STEP (PDF, 1 MB)
• Exercise Information System (EXIS) Fact Sheet (PDF, 165 KB)
• Exercise Evaluation System (EES) (PDF, 168 KB)

Other Resources

• Department of Homeland Security
• US Coast Guard
• Customs and Border Protection
• Federal Emergency Management Agency
• US Department of Transportation, Office of Emergency Transportation