Subchapter II. Transportation Security Enhancements 6 U.S. Code §1111. Definitions 6 U.S. Code §1112. Authorization of Visible Intermodal Prevention and Response teams 6 U.S. Code §1113. Surface transportation security inspectors 6 U.S. Code §1114. Surface transportation security technology information sharing 6 U.S. Code §1115. TSA personnel limitations 6 U.S. Code §1116. National explosives detection canine team training program 6 U.S. Code §1117. Roles of the Department of Homeland Security and the Department of Transportation 6 U.S. Code §1118. Biometrics expansion 6 U.S. Code §1119. Voluntary use of credentialing