While the 1st Regiment withdrew from FSB Lolo, the 2nd Regiment continued its search southeast of FSB Sophia locating numerous destroyed logistics facilities. PAVN attacks on the Marines continued, 400 artillery rounds killed eight Marines at FSB Delta, while other Marine units continued searching the area 5km south of FSB Delta. On the afternoon of 16 March the headquarters and 4th Battalion of the 3rd Infantry Regiment were lifted from FSB Delta 1 and returned to Khe Sanh, while the 1st Battalion remained to secure the base.