 The National Transportation Safety Board is imposing a rare series of sanctions against Boeing. NPR's Windsor Johnston reports the agency is accusing the aircraft giant of blatantly violating federal regulations by disclosing new details about an ongoing investigation during a media briefing this week. In part of her remarks, Boeing's Vice President for Quality, Elizabeth Lunn, disclosed new details about the investigation into a door plug that blew off of a 737 MAX jet in mid-flight.