He investigated unexplained disappearances and other unusual events related to the Bermuda Triangle to answer queries he was getting as a research librarian.

He completed a training course to become a commercial flight engineer, but, as he told the Tucson Daily Citizen in 1975, "I decided I didn't like it, so the day I was supposed to report for work, I resigned and came back to Arizona.

[5] As a research librarian at Arizona State University, Kusche got queries for all types of information from students writing term papers.

His conclusion was that the Triangle was a "manufactured mystery," the result of poor research and reporting, and the occasional deliberate falsification of facts.

[8][9] Kusche originally included a long chapter in his Bermuda Triangle book about Flight 19, five Navy Avenger torpedo airplanes on a training mission out of Fort Lauderdale Naval Air Station that disappeared in the Atlantic Ocean on December 5, 1945.

Kusche explained why the flight leader erroneously thought he was in the Florida Keys, why he said his compass had failed, and why no wreckage has yet been found.