Forty years have passed since my book The Bermuda Triangle Mystery—Solved was published in 1975. The most important chapter is “Flight 19,” the account of the five Navy Avenger torpedo bombers and a Martin Mariner PBM that disappeared on December 5, 1945. Flight 19 was on an overwater navigation-training flight from Fort Lauderdale, Florida, to the Bahamas and back. The Mariner was searching for the Avengers after they got lost.