A lot of the airshow stuff is reused nationwide. Have you seen the nationwide list Air Show, I've used that before and had activity on some of the frequencies. Also search the air or mil monitoring forums here as well as the fed monitoring page outside of radio reference. As far as Delaware goes our database is pretty accurate, the military base trunking system is full enc as are most law agencys. Conventional Dover AFB Frequencies are worth a shot. Coast guard frequencies are listed in database as well, but most of the immediate water isn't really pleasure boat friendly to begin with. I doubt much enforcement is needed if any as far as the water goes. Its possible to hear something on a mutual aid channel on the state system but would think the base can probably handle 99% on their own maybe some traffic assitance from dover pd again enc.