Stocks setup for another volatile week. Carl Quintanilla, Jim Cramer and David Faber discuss the massive market swings. Stocks opening positive and quickly turning to a mixed picture, as the Dow loses its gains. The coronavirus continues to spread throughout the U.S., while President Trump announces that the national social distancing guidelines have been extended to April 30th, adding the death rate from the virus would peak in two weeks. The CEO of Cigna, David Cordani, joins "Squawk on the Street" to discuss his company's move to waive patient cost-sharing on all treatments for coronavirus, including hospitalizations and ambulance transfers.