At 12:47 p.m. on December 9, 1999, the CH-46 Sea Knight lifted off from the Bonhomme Richard as the lead of five helicopters on an exercise to train Marines how to "take down" a hostile ship at sea. While SEALs boarded the ship from rubber boats, the Marines would lower themselves hand over hand from a rope dangling from the hovering helicopter. As part of the exercise, the Marines lugged assorted weapons and breaching tools, including 16-pound hammers and 30-pound cutting torches. The Sea Knight proceeded uneventfully to a designated holding pattern 10 to 12 miles behind the rear...