In Arizona’s Sonoran Desert, which was once again the busiest corridor for migrant crossings, U.S. Border Patrol agents and nonprofits are working together to provide assistance to those trying to make it to the U.S.    The state’s extensive experience over the past two decades has led to a centralized system for collecting information, as well as the ongoing collaboration and cooperation between local and federal governments on the ground and an extensive network of civil nonprofits, even when their efforts occasionally come into conflict.   This past year, the Tucson Sector saw a massive spike in rescue calls from people lost, stranded or injured along the desert. Agents recorded 28,000 rescues this year, according to Justin de la Torre, the deputy patrol chief.    Read more about these efforts to rescue border crossers and identify the remains of those who die on their journey up north at the link in our bio.   📸: Rafael Carranza and José Ignacio Castañeda Perez