Where I live is not under the normal commercial airline routes, so jetliners tend to stand out, especially when they are relatively low. Earlier today I saw what appeared to be a white 747 flying fairly low over the area; I took the rather unimpressive photos below. It’s *not* a 747; instead it’s a 707/RC-135 derivative with great big turbofans and *things* under the wingtips. Any ideas? It seemed to be flying from nowhere to nowhere, heading northeast, probably going north of Logan. *Perhaps* aiming for Logan airport.
UPDATE: First comment mere moments after posting seemed to nail it: E-6 Mercury, flying command post. Given the role this plane fills, it’s just a little bit creepy to have it flying overhead.