On the Mexican Border, a Case for Technology Over Concrete

Using surveillance equipment adapted from military use in Iraq and Afghanistan, the Border Patrol is creating what some experts call a “virtual wall.”

Patrolling the Border on Four Legs

Text by RON NIXON and PHOTOGRAPHS BY TODD HEISLER April 18, 2017 LA GRULLA, Tex. — Manuel Torresmutt, a Border Patrol agent, pulls his white and green Chevy Tahoe to the side of a deserted gravel road, framed on one side by...