Operates one of the largest fleets of single-engine piston aircraft in the world, with @ 550 currently in the fleet. CAP members also make available about 4,500 of their own private aircraft, making Civil Air Patrol the largest privately owned light aircraft fleet in the world. Combining corporate and member-owned aircraft, it has a larger fleet than the US Air Force. Pilots may hold aeronautical ratings in CAP similar to pilots in the Air Force. In addition, the CAP recognizes balloon and sailplane pilots with special ratings. Aircrews are also eligible for aircrew designations, such as mission scanner and observer. Cadets may receive primary flight training through Civil Air Patrol, while senior members may take proficiency training or upgrade the pilot’s certificate they already have.