Low resolution map of Flight 19. It took off 6.12.1945 from Fort Lauderdale, Floroda and soon disappeared.  12345 planned route. 2) and yellow triangle - training bombing. 6 the flight strayed north of Bahamas. It radio triangulated 100 miles  around location 28 N 78 W. 8) Martin Mariner took off from Banana River, and maybe exploded in air (9). Maybe flight 19 get lost, because its chief Charles Taylor thought it was in Keys 19).
Own work
Merikanto