Double Trouble

Todas as entradas contêm spoilers

As a civilian, especially one with a criminal record, that former NCIS agent would have been subject to search when he entered the Washington Navy Yard. Everyone, including military and NCIS personnel, at the very least have to go through a metal detector when entering a federal building like NCIS headquarters. So not only would the former agent have been patted down and searched at the gate, he would also have gone through a metal detector when entering the building. So it should have been impossible for him to enter with a training grenade on his person.