Unhappy with his life as a Marine stationed in California, Terence Tyler posed a question three years ago on Twitter: "is it normal to want to kill ALL of ur coworkers?" Struggling with depression, he left the Marines and recently started working at a supermarket in New Jersey. On Friday morning, Tyler shot two co-workers and himself, police said. The 23-year-old, clad in desert camouflage gear, opened fire at a Pathmark store in Old Bridge Township, authorities said. Authorities are investigating his motive, but family members said Tyler was discharged from the Marines two years ago after suffering from depression...