Just to set the record straight :
Under the Wireless Telegraphy Act of 1949 it is illegal to listen to or receive information from any radio transmission, unless you have authorisation from the Postmaster General. Permission has been given to listen to and receive information only from broadcast stations (e.g. Radio 1, BBC TV) and Radio Amateurs.
"It's OK so long as you don't record it, make use of it, pass it on, etc." is incorrect. It's an urban legend.
That said, you are VERY unlikely to be prosecuted for listening to the civilian air band frequencies.
Mik