B-18 Bolo bomber on display at the Castle Air Museum near Atwater, California, located on the grounds of the former Castle Air Force Base. This aircraft features the original B-18 bombing nose with the rotating turret. Future models of the B-18 would have a different style nose that gave the nose gunner a better view. This B-18 served in WWII, but was struck from inventory in 1944. She spent her civilian life as a firebomber dropping borate. After being retired, she was aquired by the Castle Air Museum and displayed in a WWII era military paint scheme and markings.