Six years before packing a rental truck with firework mortars and gas cannisters before shooting himself in the head... Army Master Sgt. Matthew Livelsberger told an ex-girlfriend he was spiraling.... In the case of Livelsberger, the Army will soon have to decide whether his nearly two decades of service as a special forces soldier with nine overseas deployments contributed to his death. Enlisted by the Army in 2006 to train as a member of its special forces, Livelsberger became a member of the 10th Special Forces Group, which conducts counterterrorism and training missions around the world. He deployed five times...