I, es THE SHOT SERIES l. VO Shot ee DELETED a cece et [thes six shots fired were numbers forty-six through fifty-one in the United States atomic weapons test program. Aircraft positioning was one of the most important phases of the shot series. Upon the correct positioning of aircraft depended the safety of crews and aircraft as well as the success of numerous sciencific and photographic missions, In all cases it was agreed that aircraft woidd be positioned according to the maxinun probable yield. ELAINE ONE and ELAINE TWO, the effects B-36 and B-47, were the most important aircraft in the positioning problem, because they were located nearest to Ground Zero on all shots. ‘ On 20 February, the final positioning conference was held at Parry Island in Eniwetok Atoll (the site of JTF SEVEN and Task Groups 7.1 and 7.5). At that meeting, Dr. William Ogle, Commander of Task Group 7.1 (Scientific), stated that he had received the final yield id — DELETED APWUHC