Can't be disarmed

When the fighters had returned, they saw the state of the children and elected to evacuate them.  The fighters took them to a city, and a man there saw that Hana and the others were shipped off to the United Kingdom, where many other refugees were going.  They were split up, and the others were sent one by one to homes for orphans and other troubled children.  Hana’s turn came late, nearly last, and she was taken to fly on another airplane to her own new home.  It was there she ran into difficulty.  She’d moved through the archway – what she would later learn was a metal detector – and it sounded an alarm.  Guards had found the weapon she couldn’t drop or leave behind, and Hana was carried off to another place.  Interrogated, asked many questions.  She was taken to the bathroom, patted down on her re-entry to the interrogation room, and they found the same gun on her that they’d taken away just half an hour ago.