america's school children? bob saget's family sues. why a judge says releasing his death records would cause saget's loved ones irreparable harm. cbs news investigation: the broken v.a. system for veterans exposed to contaminated drinking water. team u.s.a. goes for the gold. the excitement as the women's hockey team faces off against canada. explosion lights up the new york sky. why a tanker with 9,000 gallons of fuel went up in flames. holy guacamole-- why the price of avocados could skyrocket. and showcasing african american history, one stitch at a time. >> this is the "cbs evening news" with norah o'donnell reporting from the nation's capital. >> o'donnell: good evening, and thank you for joining us. we want to begin with new questions about russia, what russia is really up to and their