I hope you find relief and better health. I may be wrong, often am, but I did not see where the shooter had experienced brain trauma, i thought he saw no combat during his tour?
He was in the reserves well before going to active duty, so who knows if any head injuries were occurred before moving over. TBI’s have an accumulative effect/s & take up to 30-40 years to heal depending on severity.
The Army [read as his Plt leader or Plt Sgt] should have explained to him why leave request of shot down. Also since he may have been starting a new med. routine he should have been restricted to the Unit area/s. He was not med. able to travel long distances.
Thank you for your concern. I have been working on my issues for over 16 years [and I have put my family through hell for it too] but we’re still all here hanging in & living life on life’s terms.