WASHINGTON, Oct. 4 -- The U.S. Department of Homeland Security's Customs and Border Protection issued the following news release: Yuma, Ariz. -An aircrew from the Yuma Air Branch worked with U.S. Border Patrol agents from Yuma Sector earlier this week in response to reports of a group of migrants in distress while crossing the unforgiving Sonoran Desert. U.S. Border Patrol agents in Ajo, Arizona were alerted to activity within the Cabeza Prieta National Wildlife Refuge Monday evening. After no  more