A Boeing whistleblower spoke up Wednesday about a &;quot;cover-up&;quot; of an incident involving one of the company's planes. Ed Pierson‚ a former senior manager for Boeing‚ on Wednesday appeared before the Senate Homeland Security &; Governmental Affairs Committee to speak about several incidents involving Boeing planes. During his testimony‚ Pierson spoke about the incident where a Boeing 737 MAX-9 plane‚ operated by Alaska Airlines‚ had a door panel break off shortly after take-off. &;quot;I'm...