For those monitor radio listeners who live or visit the greater Las Vegas area you might enjoy listening to 123.820 MHz as this is the frequency that is normally used to coordinate the flight activity of all helos in the area. This includes sight-seeing, news media, Metro Police, and other helos that operate in the area. Helo pilots come on the frequency and ask the FAA air traffic controller for permission to fly in a specific direction and sometimes the reason is given.