Broward County Schools Superintendent Robert Runcie introduced the new measures in a letter sent to students' families this week.Students who survived the Valentine's Day shooting at Marjory Stoneman Douglas High School in Parkland, Florida, will have to get used to new security measures when they return from spring break next week — including clear backpacks and ID badges that must be worn at all times. Broward County Schools Superintendent Robert Runcie introduced the new measures in a letter sent to students' families on Wednesday. In it he said there would be additional security at the school, students would be given...