On March 4, NATO fighters were scrambled twice to identify Russian aircraft: once for a military transport aircraft An-26, and another time for a Su-24MR strike bomber and a Su-33 fighter jet. On March 5, two Russian Su-24M attack aircraft were escorted. According to reports from Vilnius, the Russian planes were flying in international airspace with their radar transponders turned off, without flight plans, and not maintaining radio communication with the Regional Flight Control Center. The NATO Air Policing mission in the Baltic states is conducted from airfields in Lithuania and Estonia.