Watch CNBC's full interview with United Airlines CEO Scott Kirby

United Airlines CEO Scott Kirby sits down with CNBC's Phil LeBeau and the 'Squawk Box' team to discuss the company's plan to bring back 52 of its grounded Boeing 777 planes. Kirby also addresses a nationwide shortage of pilots impacting the airline industry, Covid-19 disruptions and more. "I think we as a country have gotten to Covid as being endemic," Kirby tells CNBC.