Delaware police shot and killed a man in a wheelchair Wednesday after he refused to place his hands in the air.Instead, he appeared to be placing his hands in his pocket, which prompted police to shoot him several times, according to a witness video recorded at the scene.The man, identified as Jeremy “Bam” McDowell, slowly fell sideways, landing on the street as his wheelchair remained upright.Wilmington police say McDowell had a gun. And shouts of police ordering to drop the gun can be heard in the video.