ORLANDO, FLORIDA - JUNE 12: Long lines of people wait at the OneBlood Donation Center to donate blood for the injured victims of the Pulse nightclub shooting on June 12, 2016 in Orlando, Florida. The suspected shooter, Omar Mateen, was shot and killed by police. 50 people are reported dead and 53 were injured in what is now the worst mass shooting in U.S. history. (Photo by Gerardo Mora/Getty Images)
