VIT aircraft and none could be expected before December, Such delays in delivery danperously shortened the time available for training. Late in November, Solonel John S, Samuel, Task Group Commander, personally visited Warner-Robins and manared to get two of the aircraft released immediately, a third was released that same month, and a fourth in December, Crew training continued through a successful conclusion by applying round-the-clock schedules. The remaining two B-57D aircraft arrived at “irtland in January 1956,° A major assignment for the 4926th Test Squadron during REDWING was to determine the effects of high yield, nuclear clouds on various types of aircraft, preferably from-30 to 150 minutes after detonation. Previously ,data had been inconsistent, therefore, investigations of early penetrations would be pursued cautiously in face of unimown quantities of radiation and turbulence. ! Strategic Air Command leaders requested data on blast and radiation levels in nuclear clouds from 30,000 to 50,000-foot altitudes bt could offer neither the airframes nor the crews. Tactical Air Command was requested to assist and initially agreed to accomplish the required twenty penetrations, four for each major detonation. In September, Yeadauarters, United States Air Force, tried to obtain a commitment from the TacticalAir Command for six aircraft for three and one-half months, with crews and maintenance personne] readiness propram, without hindrance to its combat Tactical Air Command agreed, formally, to furnish three such aircraft and crews, but only for three months, REDWING leaders could not accomplish the sampling mission on that basis so bargained for Re 143 SEH -2 -003),