D. Operational Requirements - Aircraft and Ships Most of the operational requirements for aircraft and naval vessels for Operation Ivy scientific programs have been determined anc requested from the Joint Task Force. The various modifications required for aircraft participating in the scientific experiments have been coordinated with TG 132.4. Certain ship modifications nave been requested and are presently being carried out at the Mare Island Naval Snipyard. It is considered that except for last-minute revisions the operational requirements for both aircraft Fu ry) ni ships are firm and no difficulty is expected. Most of the modi- ications are presentl: being performed and are expected to be com- pleted prior to movement to the Forward Area. E. Radiclogical Sefety Studies of the scientific and military programs of Operation Ivy indicate a larse demand for helicopter recovery and radiological: satety; survey curing periods when high contamination is expected. Iz has been recommended that additional helicopter pilots be made availacle because of the fact that helicopter pilots may receive rediation dosase approaching the maximum permissible levels. F. Technical Photosrapny A new requirement for photographic documentation of gross Gamage effects on Department of Defense structures and other items has been approved by the Joint Task Force. The purpose of this photography is to determine the gross effects on the existing Army structures on the island of Engebi and on other items of interest +o the Department of Defense. Two representatives of the Office, =Shp BEST AVAILABLE COPY ~