in Richmond, Va. -- one of hundreds held every weekend across the state of Virginia and the country. We gave Samaha $5,000 and one hour to see how many guns he could buy, and how many questions he would be asked. For Samaha, the Glock handgun was a particularly painful purchase. It was the same kind of gun used to kill his sister Reema when she was a freshman at Virginia Tech. Just holding the gun in his hand was difficult. < snip > Samaha walked back into the gun show, and within minutes he was out again, this time...