The Bureau SAIC in Miami was at the conference and made the most pathetic statement you could imagine about the Bureau’s supposed inability to trace down the shooter’s postings on the Internet. The statement begins at 5:44.
https://www.youtube.com/watch?v=o5MtcAtpVfI
I believe the SAIC lied. I would love to see the FBI report on his/her/whatevers’ attempts to identify the poster.