 Moments later, the third helicopter was struck by an RPG as it turned around to rescue the crews of the first downed helicopter, and it was destroyed immediately.With two downed helicopters blocking the landing zone, the remaining helicopters were prevented from landing, so the wounded men had to be evacuated while the helicopters were still hovering.As the last helicopter took off, two Nungs and one stranded U.S. soldier grabbed the helicopter skids to get out of Ngok Tavak, but all three fell to their deaths.