Two French Air Force Mirage 2000Ds line up in formation behind a U.S. Air Force KC-135R Stratotanker after an in-flight refueling mission over southern Indiana Sept. 13, 2013. The KC-135 and its crew were from the 434th Air Refueling Wing at Grissom Air Reserve Base, Ind., the Mirages were assigned to the Fighter and Experimentation Squadron 05.330. (U.S. Air Force photo/Tech. Sgt. Mark R.W. Orders-Woempner)
The B-52 Stratofortress is a long-range, subsonic, jet-powered strategic bomber. The B-52 was designed and built by Boeing, which has continued to provide support and upgrades. It has been operated by the U.S. Air Force since the 1950s. Built to carry nuclear weapons for Cold War-era deterrence missions, the B-52 Stratofortress replaced the Convair B-36. The B-52 has been in active service with the USAF since 1955, and, as of 2012, 85 remain in service with nine in reserve.
At the outbreak of the Second World War, on 1 September 1939, the Polish Air Force had 109 PZL P.11cs, 20 P.11as and 30 P.7as in combat units. A further 43 P.11c aircraft were in reserve or undergoing repairs. Only a third of P.11c were armed with four machine guns, the rest had only two, even fewer had a radio. The P.11 were used in 12 squadrons, each with 10 aircraft (two squadrons constituted a group, in Polish: dywizjon).