I'm reposting a FB post from a TAP friend of mine:
OK, aviation/avionics hive mind: what is this? I saw it on the Air Force One Boeing 707 at the Museum of Flight in Seattle on Saturday. It looks like a tow hook (but can't be) projecting out of the lower fuselage on the port side, aft of the wing (and reflected in the highly-polished fuselage). An antenna of some kind? None of the docents had an answer.
