America's Third War: Texas Strikes Back

"I never thought that we'd be in this paramilitary type of engagement. It's a war on the border," said Captain Stacy Holland with the Texas Department of Public Safety.

Holland leads a fleet of 16 state-of-the-art helicopters that make up the aviation assets used by the Texas DPS to fight Mexican drug cartels.

In recent years, the cartels have become bolder and more ruthless.

They cross the border with AK-47s on their backs, wearing military camouflage. They recruit in prisons and schools on the American side. Spotters sit in duck blinds along the Rio Grande and call out the positions of the U.S. Border Patrol.

To combat the cartels, the Texas Department of Public Safety is launching a counterinsurgency.