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. studies have shown each urban crime wave has touched off a new round of gun buying. >> we have german lugars, derringers, small revolvers, magnums. some of these saturday night specials are small. they can be palmed in your hand. >> it was shortly after 10:00 california time when the president left his hotel. not seen by the following cameras but spotted by secret service agent larry buendorf was a hand with a gun in it coming through the crowd. the commotion erupted. secret service agents forced the assailant to the ground and then handcuffed her. she was identified as 27-year-old lynnette alice fromme, one of the earliest followers of charles manson, who was involved in the tate, labianca murders of 1969. >> about the same time gerald ford becomes president, charlie in prison writes to squeaky he's