The only planes I know of in the USAF inventory that are painted like that are either the two VC-25s that are used as Air Force One, or the E-4 airborne command posts. More than likely, it’s a VC-25.
Which begs a few questions. Why the hell do you take a 747 out low over New York for a photo op, and was the TOTUS onboard?
}:-)4