Rescue swimmer Scott Ruskan describes what it was like on his first mission with the US Coast Guard rescuing children from Camp Mystic, where nearly 30 campers and counselors died in floods.

Here's what to know about the deadly flooding, the colossal weather system that drove it and ongoing efforts to identify victims.

More than 80 people have been killed in one of the deadliest U.S. floods in decades. At least 41 people, including 10 children from an all-girls Christian summer camp, are still missing.