Forget Trump's border wall. What about his razor wire in Nogales?
DVIDS - Images - Cutting through concertina wire [Image 12 of 18]
U.S. Army Reserve combat engineer Soldiers attached to the 402nd Engineer Company Sappers, 411th Theater Command, lay a blockade of constantine wire during exercise Allied Spirit V at the Joint Multinational Readiness
Razor Wire and Concertina Wire - Max Security - Fence Resource