Great Lakes’ XB2G-1 (top left) introduced retractable landing gear and an internal bomb bay, features carried over to the XTBG-1. (Naval History and Heritage Command)
AVHP-220300-Great-Lakes-XTDB-EXTREMES-03
Great Lakes’ XB2G-1 (top left) introduced retractable landing gear and an internal bomb bay, features carried over to the XTBG-1. (Naval History and Heritage Command)