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The 73rd Aviation Company (Airplane Surveillance) (Light) was activated at Fort Rucker, Alabama on 27 March 1963. As soon as assigned personnel arrived, the unit underwent intensive training in the tactical and technical aspects of its mission. After an impressive departure ceremony, hosted by the Fort Rucker Commanding General, the unit personnel deployed to Vietnam on 28 May 1963. Its aircraft arrived in Vietnam aboard the USNS Core and were delivered to the unit commencing on 10 June 1963. The 73rd with 32 O-1 Birddog aircraft , was the first Army aviation unit to be equipped entirely with the small single engine airplane previously used primarily to ferry commanders and their staff around the battlefield for liaison. As one of the eight vanguard Army Aviation units deployed in the earliest days of U. S involvement in Vietnam, the 73rd took a simple airplane and performed historic feats with it.