A Turkish KC-135R Stratotanker taxis on the runway at Field Aerospace, Oklahoma City, Okla. The aircraft recently received the Block 45 modification which completely remodeled the inside of the aircraft’s flight deck, with new liquid crystal displays, radio altimeter, computer module updates, autopilot, and a digital flight director, replacing approximately 63 parts to include analog instruments which are considered high-maintenance or obsolete altogether. (Courtesy photo)