sentences:  On March 1, 1995, the air force replaced the Soviet style aviation regiment organization with the western wing and squadron system.Around 2000–2002, Slovakia gradually retired many of the older aircraft, including the entire fleet of Su-22, Su-25, and MiG-21.In 2004, the flight training academy and national aerobatic demonstration team Biele Albatrosy, both based at Košice, were disbanded.