>Elite Special Operations units are regularly assigned some of the most difficult and dangerous tasks. Over the years, the SEALs have had a number of major successes, including hits on terrorist leaders, high-profile rescues of hostages and the takedown of bin Laden, that have built an almost superhuman public image.

>But among some in the military who have worked with them, the SEALs have a reputation for devising overly bold and complex missions that go badly. Team 6’s debut mission, which was part of the U.S. invasion of Grenada in 1983, is a case in point.

>The plan was to parachute into the sea, race to the coast in speedboats and plant beacons to guide assault forces to the island’s airport. But the SEALs’ plane took off late; they jumped at night and landed in stormy conditions, weighed down by heavy gear. Four SEALs drowned, and the rest swamped their speedboats.

>The airfield was later seized by Army Rangers who parachuted directly onto the airfield.