at this hour, marcus lee has prevailed.porter: he warned that america was in the midst of winter peril. an a real problem such as covid, economic turbulence, racial unrest. passions inflamed by donald ection was stolen. that the pres. biden: tod on thisthis, b, uniting our people, uniting our nation. i ask every american to join me in this cause. [applause] reporter: joe biden never mentioned donald trump by name, but it was a firm repudiation of supporters.wouldo'to f pres. biden: we must end this uncivil war, that pits red versus blue, rural versus urban, conservative versus liberal, we can do this, if we open our souls instead of hardening our arts. reporter: at 78 years all, joe biden becomes the oldest man to become president. their real history is being made by his deputy, kamala harris, the first woman vice president, the first of black and indian urges, an example of the american dream. vice pres. harris: so help me god. [applause] reporter: though covid has ball -- has brought drab's, gagahi, t microphone, singing