covered in blood, a student arrested, accused of stabbing 20 of his classmates. a simply terrifying attack, heroic rescues. we are covering the very latest on that school stabbing live this morning. the search intensifies this morning for missing malaysia airlines flight 370. new clues leading investigators to one specific area. they believe it is where the vanished jetliner could be found. we're live with what's happening right now. and happening right now, emotional, dramatic testimony from oscar pistorius, defending for his life. can he convince a judge he didn't mean to kill her, reeva steenkamp, his girlfriend? we're live with what he's saying this morning. welcome back to "early start." i'm christine romans. >> i'm john berman. it is 32 minutes after the hour right now. good to see you this morning. authorities in pennsylvania have charged a 16-year-old boy as an adult in a stabbing spree at his high school near pittsburgh. alex hribal is in custody this morning. 20 students and a security officer at franklin regional