The shootdown of Trigger 4 report of the Project Trigger study team Report of the Project Trigger study team Harmer, Todd P. creator Anderegg, C. R. United States Air Force. text bibliography dcu 2001 monographic eng remote 1 online resource (42 pages) : digital, PDF file Todd P. Harmer and C.R. Anderegg. Title from title screen (viewed May 10, 2004). "April 2001." Mode of access: Internet from the Air Force History web site. Address as of 5/10/04: http://www.airforcehistory.hq.af.mil/Publications/fulltext/trigger4.pdf; current access is available via PURL. Includes bibliographical references. n-us--- Vietnam War (1961-1975) 1961-1975 fast Friendly fire (Military science) United States Vietnam War, 1961-1975 Aerial operations, American Military operations, Aerial American Friendly fire (Military science) United States D 301.2:2004019793 D 301.2:2004019793 https://purl.fdlp.gov/GPO/LPS48714 GPO 040510 20211202201817.0 in00001835938 eng