Sounds like some aerial war games for software testing on AWACS about to start up Friday/7/25...this PM...am hearing traffic on following freqs: 349.400,349.600,252.000 and 252.200...you'll need also to scan the whole UHF mil band to catch other freqs, but they probably will broadcast those freqs...there's a slight chance they'll continue their ops until sunset tonight (again Fri-7-25)
349.400 is Boeing Flight test ops, callsign has been RedHat preparing equipment from 9am-12noon for flight test...
252.000 was active (normal is 252.200) for some military jets prepping up...they're calling that channel RG9 w/ different tactical callsigns....