Braniff International Douglas DC-8-62 N1805 displaying the rarely seen underside artwork by Alexander Calder, circa 1973. (Photo: Clint Groves, Copyright: Braniff Flying Colors Collection)
Concorde flying over Djibouti (circa 1988-89), escorted by French fighter jets F. Mitterrand was on board. Via Reddit.
Mining burning coal by rocbolt on Flickr
Transport of seventeen J35D in Linköping, southern Sweden, SAAB headquarters, 1966.
This is the coolest image of a Harrier Jump Jet I've ever seen.
Tank vehicle from the movie 'Aliens'