it unfolded over three days back in 2008 in november. and 173 people killed. 308 people wounded. and the f.b.i. was warned of an individual who had told his wife after a domestic dispute unfolded that, in fact, he was planning all of this. he was involved in this. >> this is an american businessman named david coleman headly and his wife went to authorities after they got in a fight and said i think my husband is militant and i think that he is involved with this group. i don't exactly know how to pronounce it but they, of course, were the ones behind the mumbai attacks. that was five years. that wain 2003, the attacks that killed 166 people happened in 2008. so the f.b.i. knew and in fact, the f.b.i. we are learning this morning was able to alert india authorities but not enough so that they could stop this. >> his wife said my husband has purchased night vision goggles. he has trained in pakistan.