Allen had been waiting at a bus stop when he was stabbed in a “random attack” by the teen suspect wearing a clown costume, state police said. Police are reviewing purported footage of the person in the clown costume and collecting additional surveillance video. Allen was a navy veteran and retired bus driver, his family told CNN affiliate KSDK. “He’s the best brother that someone took away,” his sister, Marie Stanford, told KSDK through tears. “He was an uncle that you could talk to, you could call,” she told KSDK.