https://www.theverge.com/2017/9/19/16333376/us-navy-military-xbox-360-controller

The US Navy is beginning to use Xbox 360 controllers to operate the periscopes on submarines, according to The Virginian-Pilot. The first submarine to get the new controller will be the USS Colorado, which goes into active duty in November. The Xbox controllers will later be added to other Virginia-class submarines.

Virginia-class submarines are getting the Xbox controller added to their integrated imaging systems, which will replace a complex-looking, helicopter-style control stick. These submarines are less expensive and more modern versions of the Seawolf-class submarines, which were commissioned in the late 1990s.