He said it had been previously suggested that barbed wire or barriers could be erected as a safety measure.

BBC: Concern over Briton Ferry M4 and A48 bridge fall deaths

It was a house with high walls, barbed wires and no Internet or telephone connection.

FORBES: Indian Expert: Pakistan Hit Bin Laden

The fence consisted of seven or eight strands of high-voltage barbed wire, spaced about a foot apart, strung between tall poles.

WSJ: Escape From a North Korean Prison

After half an hour or so, the Tahoe drives up to a gated complex with a barbed wire fence and from there to a small low-lying building surrounded by a handful of Iraqis in jumpsuits.

FORBES: Magazine Article