VII of aircraft areas, proper marking and lighting of obstructions, safe positioning of test array aircraft, and specific instructions for each element of all test operations, A task group operations officer coordinated with tower personnel all instructions from the air operations center, Determining Aircraft Positioning Responsibility Immediately rumors started circulating about a subsequent overseas series, officials of CASTEE began to advise possible successors for REDWING on better arrangements for aircraft positioning, Apparently few officials were satisfied with the split-résponsibility for controlling aircraft as practiced in Operation CASTEE, An outspoken advocate for assiening the control responsibility in a military mannér was Colonel Herschel D. Mahon, of the Air Force Special Weapons Center, who recommended to Colonel David O. Byars, Jr., Joint Task Force Seven, that the commander responsible for aircraft control should also be responsible for safe positioning. He recommended that the commander, Task Croup 7.4, be held responsible for positioning, -” On 27 May 1955, Brigadier General HowellM. Estes wrote to Brigadier General William M, Canterbury, Commander, Air Force Special Weapons Center: ‘Although it is none of my business . . . The second problem involves the interrelationships between the commander, Task Group 7.4 and the commander. Task Group 7.1 in their mtual responsibility to the Commander, Joint Task Force for positioning of aircraft andparticularly for positioning of the weapons effects test aircraft," He introduced some of the difficulties encountered in previous tests. 20 "However, it had one big difficulty in that the one individual was 152 SWEH-2-003) 1 AFWL/HO