The Air Training Corps (ATC), commonly known as the Air Cadets, is a cadet organisation based in the United Kingdom. It is a voluntary youth group which is part of the Air Cadet Organisation and the Royal Air Force (RAF). It is supported by the Ministry of Defence, with a regular RAF Officer, currently Air Commodore Barbara Cooper, serving as Commandant Air Cadets. The cadets and the majority of staff are civilians and, although a number of its members do go on to join the RAF or other services; the ATC is not set up as a recruiting organisation. The enrolment age for the Air Training Corps is 13 years and 3 months; however cadets can join at the age of 13 and enter as junior cadets. When the cadet reaches the age of 18, they are appointed to the position of staff cadet and are subjected to the same regulations as adult members of staff. Service as a cadet ends, at the latest, on the 20th birthday of the cadet, when they become eligible to apply for service as a Civilian Instructor or an adult NCO