To the frantic manager of a Coon Rapids Burger King Friday night, the choice was to act fast or face disaster. A caller who said he was a fire department official said there was a gas leak in the building and that unless the windows were smashed, a gas buildup in the building would cause an explosion. So the manager and Burger King employees evacuated the restaurant and started smashing ground floor windows. Every single one. Problem was, it was a hoax. The caller was no firefighter. There was no gas.