The report of the breach of passports said that 2 employees of Stanley were fired before investigators could interview them. One other employee, said to be from Analysis (whose CEO was Brennan, btw was not fired).
Lieutenant Quarles Harris was a witness in the breach investigation because Metro Police caught him with credit and passport info he had on him, which he got from apparently one of the 3 employees (one can wonder if it was Brennan’s employee who wasn’t fired but kept on and had already potentially dumped this info on Harris who is then murdered in “the hood”).
There is a lot of meat possible here— maybe Pam Geller at Atlas Shrugs can expand with it. Brennan is serious scum.
They shot Harris through the temple as he sat in his car in front of his downtown church.
There may be, but it likely does not involve Harris. You misspelled his name, he and his mother spelled it "Leiutenant" and that is how it appears in the various police records. He was not a commissioned officer of anything; but, it seems, he was merely a street punk.
That is a small point, however, and your take on Brennan does appear accurate.
“Lieutenant Quarles Harris was a witness in the breach investigation because Metro Police caught him with credit and passport info he had on him, which he got from apparently one of the 3 employees”
You’re incorrect on this point. He was not a witness in the breach investigation. He was involved in an entirely separate case of identity theft involving an accomplice inside the State department, and nothing has ever been found to connect that case to the breach case. It just happened to be mentioned at the end of a single article on the breach case, and people have conflated the two ever since. The paper issued a clarification in the very next story about the case, to no avail.