A short time after 9/11, a private pilot out of one of the local airports somehow managed to accidentally send out a Squawk 7500...the code that says, essentially, "help, we're being hijacked."
Tensions were understandably high, so a couple of F-16s were scrambled out of Luke AFB and sent to intercept. This happened near my house, and I was outside when the jets flew by. Now, I'm a big fan of aviation, and have been to airshows where I've seen F-16s perform, so I know what one nearby at low altitude sounds like.
This was not that. These F-16s were flying angry. Some folks like to say "that's the sound of freedom," but for an enemy soldier? That's the sound of "we're fucked."