As the hours go by, the work does not let up for the hundreds who are searching around the clock for the victims still missing from the Central Texas floods, including an international group of first responders that came from Mexico to lend a helping hand.

Texas Hill Country, where much of the flooding took place this time, is often referred to as “flash flood alley.” It's home to steep terrain and a lack of vegetation that creates a perfect storm for waters to rise quickly.