Active Military
If you are monitoring in West Tennessee, during the week you will hear military traffic on: 348.9 & 324.6 (AM) (These are In-flight Refueling Freqs)
If you listen to: 364.2 You will hear fighter jets talking to an airborne AWAC jet with a callsign of "Northern Lights." (Early Warning Radar)
Listen Monday thru Friday and report what you hear. Always monitor 121.5 (AM), the emergency air freq for civilian aircraft. If a fighter intercepts an airliner, you will hear it on 121.5 Also monitor 243.0 (AM) which is 2x 121.5 and is the military airborne emergency freq.
If you hear a signal on either freq that sounds like a star wars weapon, call your nearest FAA station and report it ! However, if it happens at 15 minutes past the hour, disregard, it is a test. Any other time, it might be an ELT transmitter, transmitting from a crash site.
Be careful though....your computer and other electronics may send harmonics on either freq. However, the star wars sound is a constant signal from High to Low...High to Low.....High to Low...etc.
Happy Scanning !!
http://www.dc8.org/store/bertrand/videos.php
(Watch actual HF position reporting from the cockpit of a DC-8 jet)