I heard it today myself... seems to be our restricted military talk group. They were useing callsigns smilar to others on the ALMR. To keep privacy respected, I wont say more.
Radar
PS, I heard it around 3pm in North Pole.
Yeah, it's being used quite a bit for the past week. It seems to be some military training/exercise. I personally think they're using the wrong talkgroup too....