"The presence of terrorists in the area goes back earlier than 1993."
After the fall of Iran, many iranians moved to Norman. At the time, it seemed like a lot. But maybe that is the way it was elsewhere too. Huge racial tension during the hostage crisis. Many iranians couldn't understand the racism because they were escaping from the Shiite muslims also because they thrived under the Shah. Maybe there never was a full integration of cultures and thus causing it to be a breeding ground of discontent. Who knows. I do know that one family did extremely well and their company is like the second largest homebuilder in the state and they are headquartered in Norman.
There was also said to be a large contingent of Saddam's Republican Guard that went to Oklahoma after the first Gulf War.
Many former military men in the Shah's Iran moved to areas in the USA near military bases, particularly Air Force Bases. Some former officers had jobs with the military. This is true of Lubbuck, (Reese AFB) Texas and other N. Texas and Oklahoma bases. Norman has a US NAVAL AIR STATION
The real problems started IMHO after the resettlement of Iraqi Republican Guard after Gulf War I. According to my neighbor, it started with a few and then grew as they came in from other parts of the Country.
The Iranians I know here are really nice people and have assimilated into Oklahoma.