I walk past a military compound on my way to work. They definitely have cameras but it is a large area and I also see guards walking a circuit (they have to tag

I walk past a military compound on my way to work. They definitely have cameras but it is a large area and I also see guards walking a circuit (they have to tag positions around the perimeter). Pretty sure if one of these was doing circuits it would effectively keep the fear-of-intrusion high.