Thunderbird was a high mission-tally Boeing B-17G Flying Fortress of the 303rd Bombardment Group during World War II. The original plane, serial number 42-38050, was scrapped at the end of the war and no longer exists. The name also appears on a later B-17G delivered at the end of the war, serial number 44-85718, which remains airworthy and is painted to replicate the earlier Thunderbird.