A Flight Officer Badge is a decoration used by some of the world's air forces, to include naval aviation of the world's navies, marine forces and coast guards, to denote those who have received training as co-pilots, navigators, observers, or other aircraft officer flight crew personnel. The primary difference between a flight officer and a pilot is that the pilot is responsible for the actual flying and control the aircraft, while the flight officer assists with such duties as navigation and weapons and/or sensor systems operation.