Pat Johnson holds a framed photo of her late husband, Chuck Johnson. The L.A. County coroner’s report states that Johnson, his arteries severely blocked in several places, died of a heart attack triggered by physical activity. Three probes into his death, one by Union Pacific, a brief inquiry by Cal-OSHA and another by the Federal Railroad Administration, echoed the coroner’s report. (Mark Boster / Los Angeles Times)
Pat Johnson hugs one of her husband’s co-workers near the Union Pacific rail yard. (Mark Boster / Los Angeles Times)
