 The National Transportation Safety Board is imposing a rare series of sanctions against Boeing. NPR's Windsor Johnston reports the agency's 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.