Can anyone id this?

I'm thinking it was a firefighting aerial VHF aircraft freq? 123.65 listenend today to two or more guys making a slow flight down and around the Nellis ranges and headed toward Mesquite. Talked about everything they flew over. Made several references to KLSV (Nellis AFB). Air to Air VHF I'm thinking?

I suspect that you are correct. Two neighboring frequencies are used by the BLM for fire fighting related activity and they are 123.625, used in Northwestern AZ and 123.675, used in Southern NV.

I know 123.650 is designated by the FAA for Flight Service Station advisories but it sounds like they were just using it for air-to-air.