IT Solonel Paul H, Fackler sampline collecting from a nuclear clond several hours after an atomic detonation, On 21 Jamary 1951, Colonel Fackler with a Major Lester R, Ferriss, Jr., flew to Nellis Air Force Base in order to establish an aircraft control faciiity where comminications were available and where they plotted positions of the cloud sampler and cloud tracker aircraft, They established a control center separate and independent of the center maintained for all other aircraft in the test. alternated as aircraft controller. They were followed by the “B-29 31 APWLIHO The two colonels SWEH-2-003h 50