barksdale afb

I have read everything I can about finding a control channel or even how to find the unknown frequencies. I want to see if Barksdale afb in bossier city Louisiana has a poss new system. I was told to search 360 to 380 mhz to locate the frequencies and control channel. They are probably E but...

Found a system on 408.5650, sounds encrypted. I may have something wrong, maybe somebody can help.