The Transportation Security Administration said an officer prevented an Adams County man from taking a loaded gun on his flight out of Harrisburg International Airport on Monday.The East Berlin resident was found with a .25 caliber handgun loaded with six bullets, along with two boxes of ammunition, the TSA said.Police confiscated the items and detained the man for questioning. The TSA said the man faces a federal financial civil penalty.It was the fifth gun TSA officers have detected at the airport checkpoint so far this year.Nationwide, TSA officers detected 5,972 firearms on passengers or their carry-on bags at checkpoints last year.Passengers may transport firearms as checked baggage if they are properly packed and declared. Details on how to properly travel with a firearm are posted on the TSA website.