the proper altitude, Consequently, all parties preferred to use three B-36's, if at all possible. It was agreed that a second controller was needed in the event one of the featherweight sampler-controllers should abort. About the same time, SAC reported its inability to send an RB~50 because RB-50 crew members were attending RB-47 school. SAC then sug- gested the Air Task Group use an RB-36 instead of the already assigned RB-50, making a total of five B-36's, Task Groups 7.1 and 7.4 suggested that the RB-36 be rigged up for both control and photo purposes. Finally, on 20 August it was agreed that the ATG would operate four B-36's, The RB-36 would be the primary controller and secondary photog~ ; raphy aircraft, thereby eliminating the need for a separate controller B-36. One B-36 would be the primary sampler; one would have the primary mission of sampling and secondary mission of back~up controller; and one would operate solely for effects information, troller was used on only one shot (KOON). The sampler back-up con- LASL wanted samples at 55,000 feet true altitude, which was beyond the capability of F-8,G's. There- fore, the two featherweight B-36's were scheduled to obtain samples at 55,000 feet, In addition to the B~36 controllers and samplers, fifteen F-84's were scheduled for particulate and gas sampling; three C-54's for photography; and seven H-19's for ground sample recovery. ILLUSTRATION 6, opposite, shows the aircraft inventory of the Air Task Group by type. C,. HIGH ALTITUDE SUIT REQUIREMENTS Upon receipt of high altitude operating requirements for B-36 and F-84 aircraft, as outlined in JIF SEVEN Operations Order 1-53, the use of the T-1 High Altitude Suit for crew members was immediately investigated. Colonel Karl H,. Houghton, Chief of the Human Factors Division AFAIK —— od