"They are more than a list of names," he said. "They are people who loved and were loved. They were people with families and friends and dreams."
For the seven-minute-long tribute, Cooper listed each victim's name and a short biography as their photo was displayed on-screen. He made a point not to say the name or show the photo of the gunman.
"I think it's important that you hear their names," Cooper said.
Cooper's tribute joined the list of those dedicated to what was the deadliest shooting in modern U.S. history, in which 50 people were killed, including the shooter, and 53 others were injured.