"Stratolifter" A pure cargo and troop transport aircraft that does not receive aerial refueling. Male

"Stratotanker" The most common and widely sold aerial refueling tanker in the C-135 series. Male

"Reconnaissance" An electronic reconnaissance aircraft that intercepts enemy signal intelligence or communications and tracks missile trajectories. Male

"Constant Phoenix" A nuclear test monitoring aircraft that collects radioactive particulate matter from the atmosphere to detect nuclear explosions. Male

"Looking Glass" An airborne command post designed to command and control nuclear missile units from the air if ground control centers are destroyed during a nuclear war. Male

"Open Skies" An aerial observation aircraft designed for mutual monitoring of military facilities between nations participating in the Treaty on Open Skies. Male

"Testbed" A test aircraft used by the USAF and NASA to verify new radars, weather equipment, and spacecraft tracking systems. Male

"VIP Transport" A VIP transport aircraft designed to safely carry the President or high-ranking military and government officials. Male

"Stratolifter" A training aircraft based on the RC-135 with the refueling and reconnaissance equipment removed. Male