Concerning its inventory, it was decided that the naval aviation divest its heavy bombers and fighter aircraft (except for the Admiral Kuznetsov air wing), transferring them to the Air Force. The re-organization of the Air Force was later reverted on the grounds of being counter-productive. The four Air Forces and Air Defence Operational Commands (1st through 4th) were reverted to Air Forces and Air Defence Armies (6th, 14th, 11th and 4th respectively), one per military district each. With the establishment of the Northern Fleet Joint Strategic Command as a "de facto" fifth military district a new 45th Air Forces and Air Defence Army was formed under it. Its aviation units belong to the naval aviation unlike the other four air armies, which consist of air force units. The air force also started transforming its fighter aviation from air bases into fighter aviation regiments belonging to composite aviation divisions.