A little OT but I just read online that the new Air Force One currently scheduled to be delivered sometime in 2024 will be based on the 747-800 design even though Boeing is no longer supplying 747s. I suspect the four engine approach makes a lot of sense as part of the security for that type of an aircraft.
Maybe the GE ET44c4 would have made more sense to paint this scheme on. Only 4 traction motors on that locomotive. Sorry that was not as punny as it could have been.