examining the Department of Homeland Security's role in surface transportation technologies : joint hearing before the Subcommittee on Transportation and Protective Security and the Subcommittee on Emergency Preparedness, Response, and Communications of the Committee on Homeland Security, House of Representatives, One Hundred Fifteenth Congress, second session, January 30, 2018 United States Congress. House. Committee on Homeland Security. Subcommittee on Transportation and Protective Security, creator United States Congress. House. Committee on Homeland Security. Subcommittee on Emergency Preparedness, Response and Communications, text bibliography Legislative hearings. dcu 2018 monographic eng 1 online resource (iv, 34 pages) "Serial no. 115-47." CRDP Program record. Includes bibliographical references. n-us--- United States. Transportation Security Administration Rules and practice Transportation Security measures Technological innovations United States Local transit Security measures Technological innovations United States Terrorism United States Prevention Intergovernmental cooperation United States KF27 .H5776 2018 Y 4.H 75:115-47 Y 4.H 75:115-47 United States. Congress. House. Committee on Homeland Security. Subcommittee on Transportation and Protective Security. (OCoLC)1042330116 http://purl.fdlp.gov/GPO/gpo94321 http://purl.fdlp.gov/GPO/gpo94322 http://purl.fdlp.gov/GPO/gpo94321 http://purl.fdlp.gov/GPO/gpo94322 PUCPR 180702 20180810143039.0 on1042330115 eng