I did not know those facts in regard to the Oklahoma bombing...very interesting.
The one thing that did come to mind as I read your post was if any of the Islamic terror groups might use disillusioned Americans as cannon fodder in their war against the west. Many of the Mexican drug cartels now use seniors, disabled persons and others who do not fit he "profile" to smuggle drugs and weapons into the USA...I meet some of these people in my work with drug addicts...Some could not resist dipping int the stash just a bit.
If Al quadia or and of the other groups took this to the next level,,,,why not set up what would appear to be a home grown group, that is just a "front" for their next action.? Some people have told me that I have a suspicious mind, so maybe I'm just out on a limb.