Now in Contrast Camp Bondsteel in Kosovo, which was built by KBR in a very short time frame, had an outstanding perimeter. The outer layer was triple strand concertina wire properly staked and wired, several meters behind that was a tall wire mesh fence topped with more c-wire. Then an outer perimeter road, so Force Protection could check the fence for damage. Behind the fences was a large berm with towers of varying height so they could see over any close terrain features and with other towers close enough to overlap observation. There was an inner perimeter rode to move the guard force under cover of the berm both for changing shift without being observed and in case of incoming fire. There were also vehicle fighting positions at important spots. Everything important was far from the perimeter and there was plenty of cleared ground behind that line an enemy would have to cross after breaching the fencing/berm. Lighting was set up to illuminate the whole perimeter and arranged so as not to blind tower guards or cameras. The light extended out over 300 meters from the wire at night.
There were various electronic gadgets as well, but I will not comment on them since for the most part I didn't have anything to do with them.