America's Third War: Texas Strikes Back in Fight Against Mexican Drug Cartels

A Zetas cartel vehicle. (Texas Department of Public Safety)

Suspected Mexican drug cartel members point weapons at U.S. law enforcement.

Suspected Mexican drug cartel members dress in camouflage on smuggling runs.

Mexican drug runners brazenly display weapons on their missions to bring drugs into the U.S.

Members of the Texas Department of Public Safety's aviation unit patrol the border of Mexico.

Members of the Texas Department of Public Safety's aviation unit patrol the border in a helicopter.

Gulf Cartel head Tony Tormenta, also known as "Tango Tango." Tormenta was assassinated by the Mexican military near Brownsville, Texas. (AP)

Joaquin Guzman, also known as "Shorty," heads the Sinaloa Cartel. Guzman escaped prison in 2001 has since evaded close encounters with the Mexican military. (AFP/Getty)

Beltran Levya cartel head "La Barbie," nicknamed for his blond hair. He was recently moved to U.S. prison and arrested in Mexico in August. (Reuters)