Millions of Texans are still struggling with no power and water during what may be the costliest natural disaster in the history of Texas. NBC’s Jay Gray joins Shep Smith to discuss. The second dose of Covid-19 vaccine is crucial in creating longer and complete immunity as well as preventing variants of the virus, according to Dr. Paul Offit, director of the Vaccine Education Center at Children’s Hospital of Philadelphia. NBC’s Vicky Nguyen reports people should still wear masks, socially distance and wash their hands even after getting the Covid-19 vaccine. Until the U.S. reaches herd immunity, it is unlikely individuals will be able to return to life before the pandemic. NBC4′s Jonathan Dienst reports the FBI is investigating Cuomo’s handling of New York nursing home Covid death data. Miguel San Martin, chief engineer NASA’s Jet Propulsion Laboratory, joins Shepard Smith to discuss what it’s been like to make sure the rover landed successfully on Mars.