Problem
A couple of pilots are about to fly their personal airplane to another airport for lunch, their regular Saturday ritual, when they learn that the FAA has established Temporary Flight Restrictions for national security reasons over a college along their route where the President is speaking at the graduation ceremony. The pilots are annoyed by this inconvenience, especially because they dislike this President, so they talk about using some tape to temporarily change the aircraft's registration number, then flying right through the TFR, figuring that if they're spotted the feds won't be able to track them down because they'll be looking for the wrong airplane.
a) If they carry out this scheme, will any aviation-related federal crimes be involved?
b) If so, what are the potential penalties?