Feb. 20 (UPI) -- Five Russian planes flew into the Alaskan Air Defense Identification Zone and were escorted out by U.S. planes on Thursday. The North American Aerospace Defense Command detected the two Tu-95s, two Su-35s, and one A-50 and tracked them in the ADIZ, a NORAD press release said . NORAD launched two F-16s, two F-35s, one E-3, and four KC-135s to intercept, identify and escort the planes until they left the Alaskan ADIZ . The Russian military aircraft stayed in international