In the tiny Arizona city of Douglas, a Border Patrol surveillance camera is trained on a 10-foot-high fence with Mexico. After a few seconds, footage shows a figure appearing out of nowhere and the fence suddenly opens to allow a pickup truck through. A car follows, and they speed off into adjoining neighborhoods while the makeshift gate slams shut.
The Wild West still has a foothold here, more than 100 years after gunslingers Wyatt Earp and Doc Holliday called Douglas home. Only the outlaws are cartels and traffickers.