Prime Warning News Today

Plus danger on stage. why are so many performers now being pelted with cell phones and objects while they perform? prime warning. the energy drink with caffeine equal to six sodas that kids cant stop buying. the new call for the government to step in. and dont go breaking our hearts. well take you to sir elton johns last live show ever. >> announcer: this is nbc "nightly news" with lester holt. and good evening. im tom llamas in for lester. we want to get right to that breaking news. a typ...