Operation Order CJTF SEVEN No. 1-53 be To prepare for the conduct of experimental and technical measure- ments proposed by the Atomic Energy Coumission (AEC) and the Department of Defense (DOD) as approved by their respective agencies, and Ce To provide for the security of the joint task force and ENIWETOK and BIKINI ATOLLS. Be Tasks for Subordinate Units ae Scientific Task Group (TG 7.1) (1) Prepare to conduct tests of.the weapons and experimental de~ vices. (2) Prepare to conduct the technical and measurement programs as finally approved. (3) Prepare to conduct the radiological safety program as set forth in Annex Ie (4) Prepare to conduct documentary film operations. (5) Inform CJTF SEVEN of the technical requirements for JTF SEVEN test aircraft and surface craft. (6) In liaison with the Commander of Task Group 7.5, establish requirements for base and test facilities and inform the CJTF SEVEN of significant requirements affecting his overall mission. (7) Provide CJTF SEVEN with details of scientific programs involving military participation. Refer to Annex D for summary of ultimate tasks and list of military personnel and services to be made available to the Commander of Task Group 7el (CTG 7el). bo Army Task Group (TG 7.2) (1) Continue to discharge the responsibilities of CJTF SEVEN as Atoll Commander, ENIWETOK (ATCOM, ENIWETOK) in accordance with CJTF 132 Operation Order No. 4-52 and CINCPAC Operation Order Noo 20-52. (2) Maintain a mobile defense force for the ground security of ENIWETOK and BIKINI ATOLLS. (3) Operate port, base and military communications facilities at ENIWETOK and certain military installations at BIKINI in accordance with existing AEC~DOD agreements. (4) Operate inter-island and inter-atoll air and surface lift systems to support preparatory operations in the forward area during the CASTLE buildup phase. (5) Prepare to provide and operate the overall military communications system for handling of all forward area task force inter-atoll and long-haul traffic (exclusive of air operations, air weather and ~3-