i come in to calibrate the synthesizer for the morning tests. i walk in, i see two guys pushing it down the hall, and i turn around and there s another guy there with a gun, and he cold-cocks me. david: was the weapon a shotgun, a handgun; maybe it was a rifle? no, it was a nickel-plated beretta. it was a nine-millimeter. you know a lot about guns. you grow up in south philly, you see your share. could you recognize the burglars if you saw them again? the guy with the gun. the other two guys were pretty far away. i d definitely try. i ll be right back. okay. so how is ron? he won t be wearing a tight hat anytime soon, but he s fine. he was walking in, the burglars were coming out and kind of walked right over him. you guys know him? yeah. ron works with us. he s one of larry s assistants at the ligo project. larry: laser interferometer gravitational wave observatory. we measure ripples in space-time, trying to prove the existence of black holes. it s been said that he s the,