Response)(VIPR)团队:VIPR teams started in 2005 and involved FederalAirMarshals(英语:FederalAirMarshals) and other TSA crew working outside of the airport environment
to PSNI. UTV News. 2002-10-25 [2010-06-29]. (原始内容存档于2011-07-25). U.S. Marshals Service for Students, A Week in the Life, Wednesday. [2017-09-28]. (原始内容存档于2017-05-14)