Thousands of railroad workers could strike before the end of this week, causing a potentially massive disruption to the U.S. supply chain. Last week, two of the country's largest rail unions failed to agree on a new contract with rail carriers, after asking for more quality of life provisions covering attendance policies, as well as vacation and sick days. Negotiations between railroads and unions were expected to continue today. Unions have until a minute after midnight on Friday to reach tentative deals, or workers will strike. Suketu Gandhi, partner at Kearney, joins Cheddar News' Closing Bell to discuss.