The first figure strides purposefully out of the bushes. Dressed head-to-toe in camouflage fatigues he is likely the guide.
Six more people follow, some looking down at the trail as they go, each carrying a rucksack.
Maybe they are migrants, maybe they are drug mules, said Tim Foley, founder of Arizona Border Recon, a volunteer group of mostly military veterans who are trying to plug the holes in the frontier with Mexico.