The 500+ rescue personnel—including National Guard, Coast Guard, game wardens, helicopters, boats, and dive teams—began arriving at Camp Mystic on the afternoon of July 4, just hours after the flash flood hit in the early morning. Here's how it unfolded:
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The flood struck around 4?a.m. on July?4, sweeping cabins and trapping campers and staff .
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By Friday afternoon (July?4), Texas Game Wardens, Coast Guard rescue swimmers, and Texas National Guard units were actively evacuating survivors via boats and helicopters .
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Other reports describe over 400–500 responders deployed over the rest of July?4 and into the following days .
In short, the first wave of rescuers arrived that afternoon, with additional teams joining in later on July 4 as part of an ongoing response.
