Former Navy SEAL who was shot and killed helped veterans with stress disorder . Killing in Texas raises new questions about mental health amid gun debate in Washington . Suspect , a veteran , told police last year he was suffering from post traumatic stress . Comment:
Former Navy SEAL who was shot and killed helped veterans with stress disorder . Killing in Texas raises new questions about mental health amid gun debate in Washington . Suspect , a veteran , told police last year he was suffering from post traumatic stress . Plans in Congress weigh expanding background checks , Obama calls for action on guns .