 Bell 207 Sioux Scout

The Bell 207 Sioux Scout was a modified Bell 47 helicopter, developed by Bell Helicopter under contract from the United States Army, as a proof-of-concept demonstrator for the Bell D-255 helicopter gunship design, featuring a tandem cockpit, stub wings, and a chin-mounted gun turret.After several years development Bell displayed the mockup of its D-255 "Iroquois Warrior" to Army officials in June 1962, hoping to solicit funding for further development.