Yeah, a few weeks ago, I asked if we were going to experience an attack on our own shore.
The attackers: Had contact with people, both foreign and domestic, that the FBI claimed are suspected extremists. Destroyed all digital footprints the day before the attack. Left pipe bombs in their home.
Ahhhh! The joys of going to a technical institution, where there really isn't any politics on whether F=mc^2 or whether energy is conserved (it always is, thank God). Gravity is a constant (at least here at sea-level), and you can (almost always)