Boeing C-108 Flying Fortress
The Boeing C-108 Flying Fortress was an American transport aircraft used during World War II. Four were converted from B-17 Flying Fortress heavy bombers. == Design and development == The first C-108 built (designated XC-108) was a B-17E (41-2593) converted to a V.I.P. transport for General Douglas MacArthur in 1943.
Source: Wikipedia — Boeing C-108 Flying Fortress (CC BY-SA 4.0)