Smugglers have a "very sophisticated" operation for trafficking into the United States through a route that leads, of all places, through the headquarters of U.S. Army intelligence in Arizona.

"That smuggling operation going through there is very, very sophisticated," former U.S. Border Patrol supervisor Dave Stoddard told KVOA, a local news outlet in Tucson. "They've been getting by with it for years. They know the formula. They know the routine."

KVOA noted that the U.S. Army Intelligence Center and the U.S. Army Network Enterprise Technology Command are headquartered at Fort Huachuca, where the smuggling route that Stoddard described runs.

"Once they get into the Huachucas, there is a very worn and established trail though there," Stoddard told KVOA. "The military chooses to close its eyes and ignore it."