Two retired U.S. Lieutenant Colonels predicted the Nairobi mall terrorist attack scenario in the September/October 2003 edition of Military Review. The worst thing is that a) their solutions are appalling and b) they say it’s bound to happen again, perhaps in a stadium or a mall in the United States.
https://gizmodo.com/what-kenyas-mall-siege-reveals-about-the-urban-future-1379625024