April 13, 2018 11:42 pm MSD Teacher Contestant on ‘American Ninja Warrior' A teacher at Marjory Stoneman Douglas is competing on NBC’s ‘American Ninja Warrior.’ NBC 6 Reporter Jamie Guirola explains. US & World Videos 1:30 Suspect in custody after alleged theft in Westchester 2:35 MDPD missing persons event aims to help families looking for their loved ones 0:30 Man grazed by bullet during alleged road rage incident on I-95 0:28 10 injured in multi-vehicle crash in Broward 0:45 Migrants land in Hollywood Beach