On the morning of 25 January the men of the 3rd Brigade at Camp Radcliff began their move to staging areas in eastern Binh Dinh. Two battalions, Lieutenant colonel Raymond L. Kampe's 1st Battalion, 7th Cavalry Regiment and Lt. Col. Rutland D. Beard's 1st Battalion, 12th Cavalry Regiment went by road and air to Phu Cat, joined South Koreans in securing the airfield and support base, and carried out wide-ranging search and destroy actions nearby that met only light resistance. Meanwhile, Lt. Col. Robert McDade's 2nd Battalion, 7th Cavalry, with about 80 percent of its authorized strength and thus still not fully reconstituted after the fight at LZ Albany, boarded a dozen C-123s at the airstrip for the short ride into Bong Son. One of the C-123s crashed into mountains near An Khe, killing all 4 crewmen and 42 passengers on board. The rest of the battalion deployed without incident and then helicoptered north to Landing Zone Dog, where engineers started building an airstrip and digging in artillery.