CHAPTER IV VOL, il BOOK 6 the operation, andthe requirements were generally satisfied by specific assignment of boats to Using Agencies. all equipment and personnel except two power plant operators on Yvonne were evacuated from all islands north of Elmer by 1600 of K -1 Day. A final security sweep by Task Group 132.1 officials was made of all islands on the morning of KING-Day, and the two power plant operators were evacuated by the plane making this sweep. Due to weather conditions, KING-Day was advanced three days. The sequence of events leading to the detonation remained the same and were as indicated in the following Safety Precautions and Schedule of Events. "SAFETY INSTRUCTIONS" "a, An atomic explosion will take place in the vicinity of Yvonne during the late morning of 16 November 1952, It is possible that the Shot may be delayed for a short time (30 minutes to one hour) or be re-scheduled for another day. The safety instructions will apply, regardless of the exact firing time. Siren signals indicated below will be used on Elmer." "b. Before the Shot: The Shot minus 30 minutes All persons will be awake until after the Shot. Shot minus 5 minutes 5 SIREN BLASTS (In the event of siren failure, fire-engine whistle will be blown from 5 minutes to 1 minute before the Shot). All personnel not engaged in indoor All vehicle ignitions will be turned off. work essential to the test will be outdoors where Signals are easily heard. Personnel will not climb buildings or other structures to observe the Shot. Gusts of wind are expected at Elmer and Fred, Exercise normal precautions to secure light objects nearby. Shot minus 1 minute 3 BLASTS Shot delayed 1 LONG BLAST 6-56 All personnel turn away from the Shot site or put on special density goggles. Do not remove goggles or face Shot site until 5 seconds after the burst. DO NOT VIEW BURST WITH BINOCULARS, WITH NAKED EYE, OR WITH ORDINARY SUNGLASSES. The shock wave will arrive at Elmer about 45 seconds after the first flash of light, and at Fred about 60 seconds after the first flash of light. One continuous blast indicates the Shot has been delayed a short time (30 minutes to one hour).