"I never believed him, and it never happened. Until now," a tearful Cecilia Nelms told The Associated Press on Wednesday following the 6:30 a.m. attack at a light rail facility for the Valley Transportation Authority.
"When our deputies went through the door, initially he was still firing rounds. When our deputy saw him, he took his life," Santa Clara County Sheriff Laurie Smith told reporters.
The sheriff's office is next door to the rail yard, which serves the county of more than 1 million people in the heart of the Silicon Valley.
The attacker was identified as 57-year-old Samuel Cassidy, according to two law enforcement officials. Investigators offered no immediate word on a possible motive but his ex-wife said he used to come home from work resentful and angry over what he perceived as unfair assignments...