Eighty years ago, five planes vanished during a training run off the Florida coast. A patrol plane sent to search for the men went missing, too, giving rise to a host of conspiracy theories

In total, six aircraft carrying 27 men (14 from Flight 19 and 13 from the patrol bomber) vanished over the so-called Bermuda Triangle that day. No confirmed trace of them has ever been found. Eighty years later, Flight 19 remains one of aviation’s most notable mysteries—and where answers are elusive, legions of theories have emerged to fill in the blanks.