sentences:  In many cases they failed to do so, and the failure was compounded by Charlie Company being understrength and unable to man all the perimeter bunkers.Manning bunkers was not the only problem.Tripflares located in the Concertina wire around the base were not always reset or replaced when they went off, a common occurrence caused in some cases by the rotor wash created by large CH-47 Chinook helicopters bringing in supplies or backhauling material as 1/46th Infantry prepared to hand the base over to the ARVN.