April 20, 2011 to 26, the Air Force code-named "Red Flag 11-01" joint air base at play in Alaska. The exercise of state-owned Netherlands, Japan and other countries. Mountains of Korea Air Force F-16C base units also participated in the fight against air play. It should be noted that the latest Russian-made Tor M1 air defense missiles, in the exercise debut. The source of Tor M1 missiles is not yet clear.