You should read - while you still can, before all reports are scrubbed - on the OU bombing.
https://en.wikipedia.org/wiki/2005_University_of_Oklahoma_bombing
By the grace of God, over 84,000 people weren’t boomed.
There is a University of Oklahoma City that brings in TONS of foreign students from the Middle East.
At the time, accounts were that he had turned away from the stadium gates because of the backpack checks going on.
Even though TATP (AKA: "Mother of Satan") is nasty stuff, it is likely that more people would have been killed in the ensuing panic than by direct effects of the explosion.