The Broward Sheriff’s Office captain who initially took charge of the chaotic scene at a Parkland high school where 17 people were killed told deputies to form a perimeter around the deadly scene — which they did instead of going in to confront the shooter, according to a partial BSO dispatch log obtained by the Miami Herald. Capt. Jan Jordan, commander of BSO’s Parkland district, gave the order, the log shows, identifying her by her police call sign.