This is some interesting information on Alexis, from the Seattle police investigation of his shooting out of a construction worker’s tires. Note that the construction worker’s girlfriend had to translate for him (Spanish).

It’s noted on page 5 that Alexis’s father reported that his son had participated in rescue efforts on 9/11 (they live in NYC). Alexis would have been about 22 at that time. His father said family believed he had anger mgmt problems associated with PTSD.