Their sampan was soon spotted by North Vietnamese troops, some of whom fired at them, but Norris and Kiệt could not afford to return fire. They traveled down river and Norris called in air support to eliminate the North Vietnamese shooting at them from the northern bank. They rescued Clark and Hambleton, but Walker was discovered and killed by the NVA before they could return to rescue him. A book written about Kiệt's heroism by William Charles Anderson was later adapted into a 1988 movie, "Bat*21". In 1999, after the release of considerable classified information, a second book, "The Rescue of Bat 21", was published by Darrel D. Whitcomb. Kiệt emigrated to the United States, and, as of 2008, resided in Washington State.