On the morning of 12 February a unit of the 2nd Airborne Battalion engaged a PAVN force 5km southwest of FSB 30 killing 32 PAVN and capturing 20 individual and three crew-served weapons for the loss of three killed. At 11:00 the 37th Ranger Battalion operating 3km north-northwest of FSB Phu Loc () which protected the northwest approaches to Khe Sanh engaged a PAVN force, four Rangers were killed and one AH-1G Cobra helicopter gunship was shot down while 13 PAVN were killed and one captured together with 10 AK-47s. That afternoon the 3/1 Battalion found a weapons cache 3km south-southwest of LZ Don containing 600 individual weapons and 50 PAVN killed by airstrikes. Later that afternoon the 1/1 Battalion found a PAVN camp 3km south of LZ Don.