KUSA - One year ago this week, a 4-year-old boy drowned in a neighborhood pool in Thornton. Isaiah Lopez was found floating face down in the water at the Pine Lakes Mobile Home community.

"Safe Kids Denver Metro" at Children's Hospital Colorado is working to prevent similar tragedies. They're offering free swim lessons at the mobile home community in Thornton.

9NEWS photojournalist Andrew Christman went along.

(KUSA-TV © 2014 Multimedia Holdings Corporation)

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