In April 1972, United States Navy SEAL Lieutenant Thomas R. Norris was one of the few remaining SEALs in Vietnam. When Lieutenant Colonel Iceal Hambleton was shot down behind enemy lines, aerial combat search and rescue operations failed, leading to the loss of five additional aircraft and the death of 11 or more airmen, two captured, and three more down and needing rescue. Norris was tasked with mounting a ground operation to recover Hambleton, Lieutenant Mark Clark, and Lieutenant Bruce Walker from behind enemy lines. Kiệt was one of five Vietnamese commandos to accompany Norris, and when the others refused to pursue the mission further, volunteered to assist Norris. They successfully brought out two of the three downed airmen from more than behind enemy lines.