USA. California. 2006. Imperial Desert. The wall, in densely populated areas, is equipped with sensors, spotlights, and parked Border Patrol vehicles which include four wheelers. This surveillance has driven migrants to attempt to cross through mountains and deserts where many die of exposure and dehydration, are vulnerable to vipers, or may be attacked by US vigilante groups. View through windshield of Enrique Morones, a Catholic human rights activist enroute to dropping off gallon water containers for migrants who have survived the desert crossing.