By the way, if there was a DEATH 12 up, there was probably a DEATH 11 up somewhere too.
In addition to their "SPIRIT" static callsign, also the b-2's nickname, they really like using rather morbid callsigns like DEATH ##, DESTROY ##, etc. but they gotta be creative, since DOOM, GHOST, SPECTRE, etc. are already taken by other units!
Going back to the MAGICs, I finally just listened to the recorded audio now, & they're obviously fighter-types practicing intercepts on each-other, etc. Maybe Mark Meece has a good reason for thinking it's an F-16 out of Great Falls, but I looked up the tailcode given by his wingman to BIGFOOT when he passed the VID (visual identification) intercept data, and according to the F-16.net serial # database, it's an F-16C Block 30 assigned to the 134th FS, 158th FW Vermont ANG.
I just checked, and the 120th FW out of Great Falls currently operates F-15s, having transitioned from F-16s last year.
Tim