The gunman who killed three women in an aerobics class at a Pittsburgh-area gym bought accessories for his weapons from the same dealer that sold a gun to the Virginia Tech shooter. George Sodini, 48, purchased the items from TGSCOM Inc. of Green Bay, Wis., before committing the Aug. 4 massacre that left three women dead and nine wounded. He then killed himself. It wasn't immediately clear what accessories Sodini bought. Seung-Hui Cho purchased a .22-caliber handgun from TGSCOM in February 2007, two months before he killed 32 people at Virginia Tech. Police investigating Tuesday's shootings at the L.A. Fitness...