Collings, of Stow, Massachusetts, has operated a variety of historic aircraft for three decades and toured the country with what it called its “Wings of Freedom" tour. It has made dozens of stops in Connecticut over the years, including the stop at Bradley in the fall. The organization brought five World War II aircraft, including the B-17, a B-24J Liberator bomber, a P-51 Mustang fighter, a P-40 Warhawk fighter and a B-25 Mitchell bomber on Sept. 30 for several days of ground tours and morning and evening flights aboard the B-17 and B-24. Collings charged $450 for “living history flight experiences” on its bombers.