f.b.i. manhunt intensifies. tonight, the reward for help finding the person who planted pipe bombs near the capitol has doubled. winter wallop: the deadly storm system that wiped out part of a california highway heads east, bringing bitter cold and heavy snow. remembering cicely tyson, a trailblazer. what the legend told gayle king in one of her final interviews. stock market tumbles, the gamestop trading frenzy continues. and on the road, why these two friends never miss their weekly walk and high-five. this is the cbs evening news with norah o donnell, reporting from the nation s capital. o donnell: good evening to our viewers in the west, and thank you for joining us. we re going to begin with a big breakthrough in the fight against coronavirus, but one that comes with a dire warning about how quickly the virus is evolving. tonight, johnson & johnson says the vaccine it s developing is about 66% effective at blocking covid, and as much as 85% effective of stopping