tours so visitors can see a guitar made practically from scratch. but on november 17th, 2009, someone else showed up at gibson's door. >> mid-morning i get a call that homeland security was raiding our factory. >> gibson ceo henry, a musician himself, has been running the company since 1986. >> i thought it was a joke because, you know, homeland security raiding a guitar factory just makes no sense. >> armed federal agents showed up at gibson's nashville headquarters and their factory two miles away. nashville manufacturing supervisor carlton sanders was on site that day. >> the agents came in and told us to back away from our desks. and i kind of vividly remember, you know, who are these people. >> they weren't looking for bombs. they weren't looking for terrorists. they were looking for wood. what did you find when you got to the factory? >> there were several dozen