The Army is keeping mum on whether the Army sergeant who went on a rampage in Afghanistan has ever been evaluated or asked for evaluation for PTSD, but it is well known that in recent years the culture of the military has been to sweep such problems under the rug, in order to redeploy as many soldiers as possible. The Army has acknowledge that the soldier had been diagnosed with a "traumatic brain injury" after a vehicle rollover in Iraq. The soldier was on his fourth combat tour.
Moreover, the base from which he deployed, Ft. Lewis-McChord, has been plagued with soldier suicides and stateside violence, and is under investigation for allegedly dismissing large numbers of legitimate claims of PTSD.