I lived in Severance until 2016 and I monitored a lot of mil-air frequencies up there.
Input the frequencies like your other frequencies, just remember aviation frequencies are AM modulation unlike the NFM.
The UH-1 helos out of FE Warren use 271.9 and 308.8 using the callsign “Blade xx”
The Wyoming Air National Guard (C-130) use 257.1 and 239.975 callsign “Teton xx”
The Wyoming Army National Guard use 134.1 and 242.4, don‘t remember the callsign.
There are 2 air refueling tracks that run West/East just North of the Colo/Wyo state line.
AR 11 235.1
AR 14 336.1 and 359.1
add these for some general air to air talk:
246.8
246.9
300.125
300.225
303.0
A lot of UH-60 Blackhawk traffic was always flying North/South along the front range, I could never catch an air to air frequency.
Hopefully others will add some more frequencies.
73, Rex