U.S. Army Soldiers, with the 5th Battalion 7th Air Defense Artillery Regiment, lay down razor wire for creating an Entry Control Point (ECP) during a “Patriot Shock” exercise in Capu Midia, Romania
4th Cav OC/T's bring unmatched value to training exercise | Article | The United States Army
When and why did the US military change from barbed wire to concertina razor wire? Was it an American invention? - Quora
DVIDS - Images - 87th Sapper Company install C-Wire in Arizona to support CBP [Image 6 of 9]
File:Flickr - The U.S. Army - Concertina wire.jpg - Wikimedia Commons
Concertina wire - Wikipedia
Razor Concertina Wire Supplied to Enhance Security
597th Transportation Brigade: 2016 Year in Review | Article | The United States Army
Polish Army Soldiers build a fence with concertina wire at the... News Photo - Getty Images