Without A Trace (2002) - 1x17 - Kam Li

Jack and the team search for a recently retired U.S. Army officer who disappears following a dinner in his honor given by former members of his Vietnam platoon, including Manny Aybar. While questioning those who attended John "Bull" Carver's dinner, the squad hears hints about a controversial, fatal incident involving one of Bull's men in Vietnam. Jack's team members wonder if that event—which appears to have resulted in a decades-long cover-up by the platoon—is related to Bull's disappearance. The investigation also leads to the office of Congressman Troy Whitehurst, who served with Bull and who may be part of the conspiracy.