The two-seat version of the A-10 attack plane can be seen over the eastern Mojave Desert as it undergoes flight and handling tests. This aircraft is painted in an overall gray "lizard" camouflage. The A-10 has been informally dubbed the "Warthog" by its crews, who care less about the planes looks than for its load-carrying ability and superb low-altitude, low-speed handling qualities. This particular aircraft may be seen at the Flight Test Center Museum.
And for the record, I never saw a two seater A-10 while on active duty.