Thankfully the police relieved him of his prison.
Via Washington Post:
Investigators combed through social media and backtracked through the life of the gunman whose rampage left four Marines dead, seeking clues Friday on how a popular engineering student drifted to apparent despair in a world he described as a “prison.”
While no clear motive has been determined for Thursday’s bloodshed in Chattanooga, the probe delved into possible ties to Islamist terrorist groups or whether the attacker — 24-year-old Mohammad Youssef Abdulazeez — acted independently in a half-hour spree of violence that ended with his death by apparent police gunfire.