At about 8:40 p.m., two employees (a groundsman and a switchman) were working in a rail yard, setting rail cars to be released from the site. The groundsman was watching the switchman connect an end-of-train device on the string of rail cars. While he was on the adjacent track, a locomotive on that track moved forward and struck him, knocking him over, injuring his right foot, and amputating his left leg above the knee.