 In September 1967 the PAVN started their major shelling of the base hitting it with at least 200 artillery and mortar rounds daily, peaking on 25 September when a reported 1200 rounds hit the base.From 19–27 September more than 3000 rounds hit the base.In response Marine artillery fired 12,577 rounds, Navy ships fired 6148 rounds and more than 5200 Marine and USAF sorties hit PAVN positions.