It training personnel "74 At Eglin, personnel worked out drone operations and, later, training of the unit at Eniwetok continued until the GREENHOUSE shots were scheduled. Drones at- GREENHOUSE. 1951. The first shot fired on the morning of 8 April Before DOG Shot, Colonel Gent's drone unit launched a good many aircraft. , The two 1-33 drones, with their control aircraft, were scheduled to take blast and gust measurements, on takeoff and crashed, The first drone went out of control The second T-33 scraped a wingtip on takeoff but continued on and completed its mission, One of two B-l7 drone aircraft also scheduled to take blast measurements, aborted because itdid not respond to controls. —_ The fleet of aircraft presented a large array. There were 20 B-17 aircraft in the vicinity of the detonation to secure samples. Eight of these were drones, 8 were directors, and the remaining l were master control aircraft, The drones were stacked at 2,000-foot intervals from 16,000 to 30,000 feet. Sampling went as scheduled, excepting for the drone at 26,000 feet altitude which suddenly stopped responding to signals from its control aircraft. By the time the master aircraft regained control, there was no time to guide it through the cloud. With this exception, all the drones took good samples.-° EASY Shot followed on 21 April 1951, On this occasion both T-33 drones were lost. One received heavy damage from the shock wave, lost control, and crashed; the second was not so badly damaged bt refused to respond 36 Abilgne SWEH-~2-003), 59 st pmy: