the Seventh Fleet and was the American component of Operation Market Time. On 30 July, Task Force 71 was deactivated and operational control was shifted to Commander, Task Force 115, which was part of the Naval Advisory Group of MACV in Saigon. Market Time continued, with the addition of U.S. Navy surveillance aircraft, high speed PCF (Swift) coastal patrol boats, and U.S. Coast Guard Point-class cutters. Late 1965 saw planning for the second major influx of operational U.S. Navy units. Operation Game Warden, designed to supplement RVNN units in patrol of the Mekong Delta and Rung Sat Special Zone waterways, was to come into operation on 18 December 1966 and designated as Task Force 116. High-speed River Patrol Boats (PBRs) were assigned as the principal patrol vessels. With these operations came the requirement for the construction of new facilities. Navy Civil Engineer Corps personnel, assigned to the Officer in Charge of Construction, Vietnam, were designated to supervise the bulk of military construction, although the majority of the work was being performed by civilian contractors. Included in this construction were new Market Time and Game Warden bases. Headquarters Support Activity, Saigon was destined to transfer its functions to the Army by May 1966, but some of its personnel and facilities were to be incorporated into Naval Support Activity Saigon to provide logistic support for U.S. Navy activities in the II, III and IV Corps Tactical Zones. Naval Support Activity Danang (NSA Danang), activated in 1965 for support of Marine and Navy operations in the I Corps Tactical Zone (I CTZ), was to be expanded to support all U.S. and allied forces in I CTZ. Also under construction were harbor facilities to support the military buildup. U.S. Navy Harbor Defense and Harbor Clearance units were to be assigned to these areas. In addition, mine countermeasures forces were to be employed, both on the main ship channels to Saigon and in the harbor and coastal areas. The possibility of a U.S. River Assault Group (RAG) was under consideration to supplement the South Vietnamese navy's RAGs in operations in the Mekong Delta and the Rung Sat Special Zone. With the continually increasing United States Navy commitments in Vietnam, early 1966 brought the requirement for better integration of all U.S. Navy activities assigned to MACV. Three months of planning culminated in the establishment of U.S. Naval Forces, Vietnam on 1 April. In early January the