On the seventh day of the government shutdown, Gio Benitez has the latest on the FAA warning about staffing shortages at major hubs such as Newark, Houston, Chicago and Las Vegas after air traffic controllers call out sick during the government shutdown; Rachel Scott reports on Pres. Trump suggesting that some of the 750,000 federal workers currently furloughed without pay may not get back pay when the government reopens; Matt Gutman has details on the medical helicopter carrying three people