The ATF had a female informant on the inside of the kook ring surrounding the bombers. She REPEATEDLY and FORCEFULLY warned LEO's about what was sure to come.
But nooooo, they wanted to make a HUGE splash by arresting them all at the last possible instant, they didn't want to settle for some BS "conspiracy to" charge.
Final bomb timing switched at last minute, and PRESTO..! Okbomb.
So there ensued a MASSIVE cover-up about what they knew.
ATF informant Carole Howe repeatedly warned US authorities.