seeing on their tv screens were unlike anything they'd had to absorb before. >> a small grocery store has been robbed. the owner of the grocery store, nathan hurt, has been shot and killed. >> what happened today? >> as i understand, a man came into the store and had a gun and asked for the money. then my grandfather reached for a gun he had and grabbed at the man's gun, and it went off. or he shot him twice, and my grandfather fell to the floor. >> why did he feel he had to have a gun? he just thought he needed it for protection. >> today ordinary citizens who would not otherwise dream of having a gun are buying one because they are scared out of their wits. >> william rubiak is a ukrainian immigrant who owns a store outside washington, d.c. he's been robbed at gunpoint four times in the past two years. now william rubiak has bought a gun, and he says next time he will use it. >> i will shoot, and i will shoot to kill. >> fear is the biggest seller of guns.