sentences:  While Hayes was refueling, only his chase ship (a UH-1 from Company A, 123rd Aviation Battalion) was airborne over the base.They provided what fire support they could using door guns and grenades, and before breaking station to refuel they landed at the VIP pad and picked up "six or seven" of the most critical casualties and evacuated them to Chu Lai.The sappers had broken contact by the time the brigade commander, Col Hathaway, had his command helicopter land at Mary Ann.