A live bullet discovered aboard United Airlines Flight 1302 forced 178 passengers to deplane the Boeing 737-900 at Denver International Airport.
https://www.foxnews.com/us/live-bullet-found-aboard-united-flight-forces-passengers-off-plane-security-sweep-denver-airport
https://www.foxnews.com/us/live-bullet-found-aboard-united-flight-forces-passengers-off-plane-security-sweep-denver-airport