The guards are all male, and never speak to them.
Further sounds of movement were heard over the speakers, and then the guard spoke again.
He - turned back and the guard who had spoken to him spoke again.
One guard turned to the other and spoke in a whisper.
Before the guard could speak I pushed him aside and leaned close.
The guard over there spoke to a friend, and she could hear the words he said.
They had been driving for about thirty minutes in silence when the guard spoke.
Before too long, he came to the intersection of which the guard had spoken.
The guard spoke three words as he turned from bolting the door.
The guard spoke to someone in the hall and then stood at attention.