Authorities discovered a second military-grade launch tube this week in passenger luggage at Baltimore Washington International Airport. The inert rocket launch tube, said to be free of any explosives, was recovered from the baggage of a United States Air Force sergeant who arrived at BWI on a military flight.

“While the launch tube presents no immediate threat to anyone on the ground, there is a slight chance that it could contain pressurized gas, and was therefore not allowed on the sergeant’s connecting commercial flight,” a statement from the Office of the State Fire Marshal said.