Thunderbird is the name given to a Boeing B-17G Flying Fortress. It is one of the few surviving flyable B-17s, and is the largest aircraft housed at the Lone Star Flight Museum, located in Galveston, Texas.
The demonstration aircraft, originally B-17G-105-VE 44-85718, is painted to replicate a noted veteran World War II bomber of the 359th Bomb Squadron, 303rd Bomb Group, part of the U.S. Eighth Air Force, based at RAF Molesworth, England.