Somewhere, no doubt. But the Border Patrol guy said he hadn't seen any drug runners for decades. And, he added, the illegals don't wanna be seen so they keep to themselves; at least on the low road along the border of Mexico.
There was more traffic than I expected, but the weather was perfect. At about the 40-mile-point, SW of Sierra Vista, you get to decide whether to go north to Patagonia or continue west to Nogales.