Border 2 Fire initially started 1:58 p.m. Jan. 23 in San Diego County. After being active for two days, it has burned 6,625 acres. A fire crew of 2,151 effectively contained 10% of the fire by Saturday evening. The blaze's cause remains under investigation.

A Border Patrol agent pats down one of four men after the group crossed the border illegally through a gap in two walls separating Mexico from the United States before turning themselves in, Thursday,

As the Border 2 fire races across thousands of acres near the U.S.-Mexico border, San Diego County firefighters are locked in an uphill battle against fierce winds, steep terrain and dangerously low humidity.