Are you aware of TFRs? If not, you should be! If you violate a TFR, you may be intercepted by military aircraft in flight and/or detained/interviewed by local law enforcement upon your return. It's also one of the most commons reasons for actions by the FAA and loss of pilot license privileges.

     While most TFRs really are temporary, some TFRs are in effect "until further notice" for the entire "US", such as those related to nuclear/conventional power plants, dams, refineries, military bases, and large gatherings of people, such as sporting events.  Click below for further details by state.