The exit hole from a misfired cannonball is seen in the second story wall after it traveled through a Dublin, Calif., home on Cassata Place on Tuesday, Dec. 6, 2011. The cannonball misfired during the taping of an episode of the Discovery Channel show "MythBusters." The cannonball, fired at the Alameda County Bomb Disposal Range in Dublin, also damaged minivan parked a few blocks away on Springvale Drive. There were no injuries. Sheriff's spokesman J.D. Nelson told the Contra Costa Times that no one was injured and the home's residents didn't even wake up until the dust was settled _ literally on top of them.