Two tidbits on Timothy McVeigh and Sahim Alwan.
They were both security guards for private companies.
McVeigh worked for Burns Security in upstate New York.
Sahim Alwan was a former security guard at a local Blue Cross/Blue Shield office in upstate New York.
I've always felt that there was an OKC-Al Qaida link ... McVeigh and Nichols weren't/aren't the brightest bulbs on the Christmas tree; there's no one way they did that on their own.