You can find them in dusty, sunbaked badlands, moist tropical forests, and the salty spray of third-world littorals. Standing in judgement, buffeted by the rotor wash of a helicopter or sweltering beneath the relentless desert sun, they instruct, yell, and cajole as skinnier men playact under their watchful eyes. In many places, more than their particular brand of camouflage, better boots, and designer gear sets them apart. Their days are scented by stale sweat and gunpowder; their nights are spent in rustic locales or third-world bars. Read more.