The North American Sabreliner (later sold as the Rockwell Sabreliner) is a mid-sized business jet developed by North American Aviation and was offered to the U.S. Air Force in response to their Utility Trainer Experimental (UTX) program. Due to similarity of the wing and tail to North American's F-86 Sabre, it was dubbed "Sabreliner." Military variants, dubbed T-39 Sabreliner, were used by both the U.S Air Force and U.S. Navy after the Air Force placed an initial order in 1959. The Sabreliner was also developed into a commercial variant.