From the Soviet state-run (KGB/FSB) propaganda outlet, RIA Novosti:
MOSCOW, March 19 (RIA Novosti) – More than 70 aircraft and some 1,000 troops will be deployed in a series of tactical drills in preparation for a large-scale exercise next week in northwest Russia, military officials said on Tuesday.
Preparations for the exercise, codenamed Ladoga-2013, have begun in the Republic of Karelia, and the Leningrad, Smolensk and Tver regions with tactical drills by fighters, bombers and army aviation.
Aviation to be used includes MiG-31 Foxhound and Su-27 Flanker fighters, MiG-25RB Foxbat interceptors, Su-24M Fencer attack aircraft, Su24MR reconnaissance aircraft and Mi-8 Hip multirole helicopters and Mi-24 Hind attack helicopters.
Full article: Russian Air Force Readies for Massive Drills (RIA Novosti)