 Anadyr has also been a prominent base for Soviet Air Defence Forces due to its close proximity to Alaskan airspace.The Yakovlev Yak-28P (Firebar) interceptor was stationed at Anadyr starting in the 1960s, along with S-75 (SA-2) surface-to-air missile installations.An R-12 Dvina (SS-4 Sandal) medium-range ballistic missile (MRBM) complex, which targeted American military installations in Alaska, was located 13 km (8 miles) northeast of Ugolny airfield.