wolfepack... there is a decision making paradigm for potential high threat situations called "OODA" standing for observe, orient, decide, act.....you observe a potential threat situation....you physically orient your body to the threat (quickly scan around you as to not be overcome by tunnel vision)... decide what is the best course of action... act on your decision...even if you immediately identify the sonic boom, they typically do not happen over populated areas, so something unusual is going on...although I am a texting illiterate, most people have real time intelligence link via cell phone to open source intelligence, TV, radio etc. and probably a TV monitor somewhere in the restaurant...time to gain intel at a relative secure position, then make a decision how to react to a potential threat, or time for key lime pie...I was not a combat vet in SEA, but spent time in Thailand and the Phillipines and would not set with my back to a door for several years when I returned home .. regards Les