It's tough to keep looking at this information, but hopefully the more we learn the better chance we'll have to prevent future tragedies.
And the Orlando Shooting investigation is still far from over.
On Monday, the FBI released transcripts of killer Omar Mateen's call to 911 during the shooting. The Bureau chose to redact certain bits of sensitive information from the call, but the message is clear. The mass murderer said he was doing this for religious purposes.
He later spoke to a crisis negotiator, whom he warned about having a rigged explosive vest like the ones "used in France."
See the full transcript (below):