See related story: Boeing Converts 737 Into Bomber

Visitors to Boeing's defense group offices examine a 6-foot cutaway model of the 737 Multi-Mission Maritime Aircraft. Behind them, the curved wall encloses a cabin mockup with tactical computer consoles.
Chris Genna
An artist's sketch shows how the Boeing 737 Multi-Mission Maritime Aircraft will look in service with the U.S. Navy.
Courtesy of Boeing