A missing door plug on an Alaska Airlines Boeing 737 Max that blew out mid-flight in January was due to a lack of paperwork and four missing bolts. Boeing revealed that workers did not reinstall the bolts because they never received a work order to do so. The incident highlights issues with quality control along Boeing assembly lines, leading to federal investigations and delays in jet deliveries. Despite potential danger, no passengers were seriously hurt, but Boeing's disclosure of details at a recent briefing led the National Transportation Safety Board (NTSB) to reprimand the company for sharing "non-public investigative information." Boeing faces further consequences as the NTSB referred their conduct to the Department of Justice. Steps are being taken to improve safety, including slowing down the assembly line to address issues promptly.