The "Ranch Hand" sign at Nha Trang Air Base, Vietnam, with a Fairchild C-123B <i>Provider</i> in the background. Note the additional sign "Courtesy of 14th SOW and 62nd Wg VNAF".
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/afhistory/tactical_airlift.pdf">Tactical Airlift (AFD-101013-035)</a> p. 391.