That notion is so ridiculous I can’t believe they dared to state this in public! The neighbors of the shooters noticed suspicious and unusual activity at the terrorists’ house well before the attack happened, but were afraid to say anything lest they be labeled islamophobes. The terrorists were preparing, in advance, for an opportune time to carry out their attack in order to achieve maximum damage. This is obvious even to those of us without an inside track at the FBI.
Sorry for the double post! I guess I should be watching football and posting on FR at the same time!