In certain cases Royal Naval Volunteer Reserve officers of comparatively short service have been given command of squadrons either because they showed exceptional ability and powers of leadership, or in the case of training and second line squadrons, because their flying experience prior to joining the R.N.V.R. especially fitted them for such appointments. The Regulations allow naval officers to be appointed to command of squadrons of the Fleet Air Arm according to merit and irrespective of whether they have R.N., R.N.V.R., or R.N.R. status. Flying experience is not, of course, the sole criterion by which fitness to command an air squadron is assessed.