:: POTUS is right - barbed wire can be a lovely thing. ::
Concertina...it razor-wire, not a small accordian.
Small slide to take my mind off the Florida circus...
Razor wire: whoever invented that stuff was a pure sadist. My first sight of it as when bidding a piping job in a medium security prison. That stuff just looks sick.
A company in my hometown manufactured that wire. One time a trash truck spilled some waste razor parts in the middle of the main intersection of a nearby small town. I heard that incident kept the Goodyear and Firestone stores busy for weeks!