 The NTSB says Boeing shared information about the 737 MAX door plug investigation with the media. The agency says that's a violation of regulations and an agreement signed by Boeing. It says Boeing also speculated about the cause of a door plug blowout in January, indicating an employee's work may have been responsible. The NTSB says it's focused on the probable cause of the incident, not placing blame on any individual. That is CBS's Cammie McCormick.