sentences:  Its initial activities centered around rapid development of the port facilities, ammunition dumps, base camps and airfields necessary to support the build-up of US combat forces deploying to Vietnam.During the initial construction phases its combat engineer battalions also provided support for search and destroy missions and defensive operations with the 101st Airborne Division near Ninh Hoa and the 4th Infantry Division at Pleiku.On 18 January 1969, an ammunition storage area was completed at Cam Ranh Bay.