FORT LAUDERDALE, Fla. (AP) - The Florida high school where a former student shot and killed 17 people with an assault-type rifle is reopening for teachers Friday as the community grappled with word that the armed officer on campus did nothing to stop the shooter.That failure, plus reports of a delay in security camera footage scanned by responding police and several records indicating the 19-year-old suspect displayed behavioral troubles for years added to what the Florida House speaker described as an "abject breakdown at all levels.