A police officer who was one of the first to arrive at the Pulse nightclub in Orlando has claimed he was made to wait while Omar Mateen wandered around the club gunning people down. The FBI said this week that police first responders 'engaged the shooter' inside the club at 2.08am but Officer Brandon Cornwell said he had been told to wait for a SWAT team to arrive. It is known that Mateen, who was heavily armed with an AR-15 assault rifle and a handgun and was feared to be carrying explosives, had an exchange of fire with a security...