I watched the air show from the Patuxent River in a boat. I highly recommend this method Vs physically attending (if for no other reason you can see the lovelies on the boats 'expressing' themselves as the planes flew directly overhead
The following frequencies were in use:
The usual suspects on the Trunked System (See the PAX River Database). Also, Talk Groups 1712, 816, 80 all had air show activity on them (I have not heard them in use before and I frequently monitor the system).
One of the statewide conventional 800 MHZ frequencies was used to link back to the Emergency Operations Center but I can’t recall which one it was.
The following UHF air frequencies had Blue Angles air to air traffic on them:
275.35
284.25
346.5
340.2
336.5
305.5
Communication Cart frequencies:
142.61
139.81