Well i don't about all that..But as far as a secret military force..Blach water is not a secret and we know he did mercenary work in Africa and other countries..That is what a security force is.. Not really a secret but a military training group ... So add in the word secret makes it sound a little crazy ^_^
There's a small overlap on the venn diagram between those with the mindset to carry out a terrorist attack / assassination, and those with the competency to do so. Someone trained for special operations, after killing a congresswoman, wouldn't spend the morning buying a bike and car on ebay and withdrawing cash from an ATM in his name. Same reason the Magabomber had inoperable wishful pipe bombs and a van covered in Trump posters.
I think there's enough public information now for us to have serious doubts about this guy's motives, that is to say, know that we don't know. But there's plenty of information to conclude he's a retard