This is it.
This is the boom microphone used in "Spellbound."
If I had to take a guess, I'd say it's a shotgun microphone. It's in a windshield. My guess is that it's a Sennheiser MKH416.
The sound in this movie is pretty good, so good job Sean Welch & Greg Brazel (sound recordist & additional sound recordist in D.C., respectively).