The only story that immediately came to my mind reading this thread, was the story of Terry Dobson working as a bouncer, disarming a drunk wielding a chainsaw.
The late Terry Dobson also had a story that after 10 years of Aikido under O' Sensei, "Mr. Impeccable" (as he called himself while telling the story) found his building caught fire in New York. In his one hand he grabbed a salt shaker, in the other a pepper shaker, and ran downstairs.
His gi, his typewriter, everything was destroyed.
His point: you never know how you're going to respond in a crisis.