I hate this happened. I hate what happened to the shooter. I hate what the shooter did. But just doing a brief review of what happened, it sure seems everything that could have been done to help the shooter, had been done. But apparently, he needed more.
My father was a US Marine who was wounded during WW2 on September 27, 1942 on Guadalcanal. In addition to losing partial use of the left arm, shrapnel was sprayed into his brain which caused him to have periodic seizures for the rest of his life. But he continued to serve in the Marines, served in combat again at Guam and Saipan. He was in the reserves at Iwo Jima but was never sent ashore. He wanted a career in the Marines but was medically retired in 1948 at 100% due to the severity of the injuries he received on Guadalcanal. He came home and went to work in the store his father and uncle ran. He eventually bought out both his father and uncle and ran the store until he retired, sold off all the stock, and sold the building. He raised seven children with all seven graduating from college, something neither he nor my mother did, and six of the seven received some sort of graduate degrees. When retired from the Marines in 1948 at age 29, after repeatedly asking the question how long he had to live, he was told to count every day past 40 as a bonus. He died at age 82.
My brother died at 72 in 2020 as a result of his exposure to Agent Orange while in Vietnam in 1968-9. My brother enlisted out of high school because his grades were so bad and he couldn't get into college anywhere. After serving his enlistment, he got married, graduated from college, got his master's degree, rejoined the service as a reservist, and spent the majority of his working career creating and updating banking software. When he first got sick from his exposure to Agent Orange, about 2018, the VA doctors told him that they were seeing a lot of people just like him. A couple of years before the symptoms of Agent Orange arose, my brother participated in CycleAmerica, which was a fund-raising event that involved riding a bicycle from Seattle to Washington, DC. When my brother asked his boss for time off to do the event, his boss said two things - (1) how much should he pledge and (2) because my brother had been forfeiting annual leave every year for years because he just couldn't be spared, to take as much time off as he wanted and it would all be paid time off.
All of the above is to say that not all veterans carrying the mental and physical scars from their service are nuts. My father and my brother were both honored for their service when they were alive. While I never heard a shot fired in anger while I was serving, I am so glad I did serve. I was wholly unsuited to be in college when I was 18 and if I had gone to college at 18 it would have been a waste of time and money. The combination of (a) North Carolina making cheap college tuition a major priority, (b) GI Bill educational benefits, and (c) working about 20 hours a week allowed me to graduate college without ever incurring a single penny of educational loans. We need to take better care of our veterans. But based on the experience I have with my father, my brother, and myself, the help is there. It just a matter of making sure the affected individuals have a strong enough family network to be able to use the offered help. And that strong family network is the responsibility of every single person in America.