I said to him: 'You mean the guys in the gun towers are deaf?

Jurgen did as he was told, looking up at the gun tower.

"The only thing missing now is the gun tower."

The facilities they live in do not have gun towers or barrier fences.

"I put up with it until the gun tower arrived," he said.

We've got to get closer to the gun tower before we move!

The armored hatch in the side of the gun tower was open.

To get guns, you must buy them, and sometimes you may have to build the gun tower first.

The perimeter of the maximum security section is monitored by eight gun towers.

The pipper lay in the middle of the gun tower.