A Royal Laotian Air Force North American T-28D <i>Trojan</i> (USAF s/n 51-7696) during the Vietnam War. This aircraft was delivered to Laos in 1970 and later (by 1974-75) in service with the Philippines.
USAF
<a rel="nofollow" class="external text" href="http://www.afhso.af.mil/">U.S. Air Force Historical Studies Office</a> publication <a rel="nofollow" class="external text" href="http://www.afhso.af.mil/shared/media/document/AFD-100526-034.pdf">Gradual Failure: The Air War over North Vietnam 1965-1966 (AFD-100526-034)</a> p. 65. <a rel="nofollow" class="external text" href="https://media.defense.gov/2010/May/26/2001330292/-1/-1/0/GradualFailure.pdf">pdf</a>