After considering that the primary mission of the E-4 is to be an emergency airborne command post, I hope you will see that the USAF doesn’t routinely publicize where, when, or why one of the aircraft is wherever it is when it happens to be spotted somewhere. Thus, it seems probable we will never know.

Actually I thought maybe someone involved with spotting at Heathrow may know, im somewhat out of the loop studying the ATPL books. If the USAF was using it for a sensitive or emergency situation I doubt Heathrow would of been the airport to land at with Mildenhall the most likely. 🙂

Mark L, that may well explain why its in then 🙂 I sure wish I was there to see it.