states head to the polls for the super tuesday primaries. nikki haley coming off her first primary victory. why she s also welcoming the supreme court s decision. the new storm slamming the west coast after that monster blizzard brought more than seven feet of snow. the air national guardsman pleading guilty to leak the pentagon secrets on a chat forum. how long he could spend in prison. princess kate spotted for the first time in public since her mystery hospitalization in january. nearly five months after the october 7th terror attack the new u.n. report on allegations hamas used sexual violence as a weapon. nbc news investigates the new technology that can spot fentanyl hidden in vehicles at the border. but why are millions of dollars worth of these scanners going unused? and it s one of the biggest aviation mysteries of all time. a decade after it vanished, will the search reopen for flight mh370? announcer: this is nbc nightly news with lester holt. good