Florida Gov. Rick Scott asked the state’s law-enforcement commissioner Sunday to immediately investigate the response to the deadly school shooting last week in Parkland. Mr. Scott’s move comes as Broward County Sheriff Scott Israel said he was further investigating his officers’ handling of the shooting as criticism mounts that the agency failed to stop the gunman. The law-enforcement commissioner is Rick Swearingen, who was appointed to the post in 2014 and has more than 30 years of experience in the state and capitol-police agencies Detectives with the sheriff’s office are reviewing claims from officers in nearby Coral Springs Police Department...