Centers for Disease Control and Prevention Director Dr. Rochelle Walensky defended the agency’s Covid-19 mask guidance policies amid widespread criticism from lawmakers and health officials. Walensky pointed to the nation’s declining Covid cases and increasing vaccine rates. David Kennedy, former NSA hacker, discusses DarkSide, the criminal group behind the Colonial Pipeline hack attack. CNBC’s Brian Sullivan also reports that much of the cybersecurity oversight in the U.S. is operated by the TSA. Former Republican representative Barbara Comstock is one of 100 Republicans who are threatening to leave the party. She says their party wants to see center-right governance, and not be represented by people like Rep. Matt Gaetz and Rep. Marjorie Taylor Greene. Frank Lowenstein, special envoy for Israeli-Palestinian negotiations under President Obama, discusses the conflict in Israel. Plus, eye problems are on the rise among young people due to increased screen time during the pandemic.