Two unidentified soldiers check for communist movements across the DMZ in North Korea at Outpost Maizie. OP Maizie was manned by the 1st Reconnaissance Squadron, 9th Cavalry Regiment, 1st Cavalry ...

Outpost Maizie, Demilitarized Zone, Korea, September 1959: Pfc. Joseph Williams checks for communist movements across the DMZ in North Korea.

At best, the barrier can re-demilitarize the DMZ and discourage North Vietnamese regulars from frontal forays against Marine outposts. But it cannot block the end run down the Ho Chi Minh Trail ...