D-3 DAY Evacuation of vehicles and heavy equipment from Zero Island was started. D-2 DAY Scientific installations on the Zero Island and last rehearsals of all experiments were completed. Evacuation of personnel from unused Zero Islands was completed. A physical search for unauthorized personnel was made on all islands other than Eniwetok and Parry. Photo tower teams left the USS Curtiss by LCPL for the photo towers. 1700 Two DUKW’S were stationed on an island adjacent to the Zero Island by TG 7.2 for use as standby transportation on Zero Island for the reentry party on D-Day. 0800 D-1 DAY 0001 A mobile armed reserve was established on Eniwetok by TG 7.2. 0600 A muster of all JTF-7 personnel in the atoll was made and reported to CJTF-7. From this time until H-Hour a personnel roster was maintained current. 0630 to 1000. The bomb was transported from the USS Curtiss to the Zero tower and hoisted to position. Upon completion of the bomb installation and tower instrumentation the firing party made its preliminary check of the tower to ascertain that the weapon and firing circuits had been left in a safe condition. The firing party consisted of Dr. Graves, firing supervisor; Colonel Preuss, AEC representative; Mr. Henderson, in charge of bomb installation; and Dr. Grie~, in charge of firing circuits. 0700 Patrol planes departed on offshore patrol. Upon completion of mission they proceeded to emergency moorings at Kwajalein. An LCPL left the USS Curtiss for the photo towers to pick up photo tower personnel who had completed loading and checking of cameras. 0800 All ships of TG 7.3 not required for actual operations evacuated the lagoon. 0830 General Hull, Captain Russell and Dr. Froman made a final inspection of the Zero Island. 1100 Weather briefing was conducted. After this briefing the decision to proceed with the test was made and the Joint Chiefs of Staff, the Atomic Energy Commission and Los Alamos Laboratory were advised. 1200 Two air-sea rescue boats (AVR’S) departed from Parry for the Zero Island. On this trip buoys were lighted in preparation for the night trip of the firing party. 1230 Final evacuation except for the security guard, firing party, Dr. Shonka, Mr. Hedberg (the power supply supervisor), two diesel operators, one radar and two communi~tions tecQTc (gTc (dt) Tj53à) Tj0 Tr 20.779 Tc475 ndwo5 -3sta8 Tc (c2.746è56Tj0 Tr -3 Tj0 Tr 23cur 1300 1300 1330 1400