CAUGHT IN THE CROSSFIRE

Top: A funeral in Guatemala for one of 19 migrants found shot and burned in January in the state of Tamaulipas, a longtime cartel battleground. Above left: The man known as El Comandante, a coyote boss who runs a network out of Miguel Alemán, a small border city at the center of the Valley’s human-trafficking corridor. Above right: Border agents find nearly 50 people hidden inside a tanker trailer near Laredo. Right: Discarded wristbands worn by migrants. “The bracelets show that you’ve paid the cartel the fee to cross the river,” a coyote explains, “so that no one passes who hasn’t paid.”