A massive funnel cloud sliced through the Houston area, downing trees and tearing pieces from buildings. NBC News' Priscilla Thompson reports from hard-hit Spring, Texas. A record 31 million people are expected to fly for the Thanksgiving holiday. NBC News' Tom Costello reports on how the airlines are preparing for the busy week ahead. The Defense Department has now opened an investigation into Senator Mark Kelly after a video with Kelly and five other democratic lawmakers, all who served in the military or in intelligence, urged members of the military not to follow unlawful orders. The retired U.S. Navy captain could be recalled to active duty for a court martial, according to the Pentagon. NBC's Garrett Haake reports. A federal judge ruled the prosecutor appointed by President Trump to pursue cases against former FBI Director James Comey and New York Attorney General Letitia James was improperly installed, voiding both prosecutions. The Justice Department says it will appeal. NBC News' Laura Jarrett reports. Jimmy Cliff became a foundational pillar of reggae music with hits like "Many Rivers to Cross" and "Vietnam." People across the world are mourning the loss of the music legend who died at 81 years old. NBC News' Steve Patterson has more on his legacy. Dramatic moments were caught on camera in Atlanta after a man having a medical episode behind the wheel crashed his car into a building. Dr. Kehinde Idowu happened to be nearby after a missed turn caused his GPS to reroute him. He jumped out of his car to help save the man. NBC Nightly News anchor Tom Llamas spoke with Dr. Idowu.