Tony Crescenzi, PIMCO Market Strategist, says the Fed won't give up it's hard-won credibility. Liz Ann Sonders, Charles Schwab Chief Investment Strategist, says markets have wrung out complacency, Ed Yardeni, Yardeni Research President, says productivity is making a huge comeback. Dr. Amesh Adalja, Johns Hopkins Center for Health Security Senior Scholar, discusses the Covid-19 omicron variant and vaccine mandates.