he flagged down police last night when he saw a suspect elfrain guzman fighting with workers. as officers tried to escort guzman out of the store, he grabbed a gun from one of the times. tonight his family is in shock. >> he was a very nice friendly person. very nice. >> reporter: probably doesn't surprise you that he was trying to protect the other stores? >> of course, yeah. >> police are reviewing tactics, equipment, and surveillance video to figure out how guzman got his hands on the police officer's gun. delta canceled 530 flights. a computer outage at the airlines grounded more than 1,000 flights from around the world yesterday. delta says that the systems are back up and running, but slowly. passengers are doing their best to stay patient. >> i'm going out to jfk, so i'm taking a taxi now to get there. should check their flight status. right now the airline cannot estimate when schedules will be back 100% to normal. >>> a staten island man who says he was targeted because of his support for donald trump says he won't be silenced. his symbol of support is back. cbs2 meg