Coast Guard Petty Officer 2nd Class Cynthia Oldham demonstrates the proper way to wear a lifejacket to the kindergarten students at Garfield Elementary School in Revere, Mass., June 11, 2015. It is a federal law that children under 13 are required to wear a lifejacket at all times while on the water. U.S. Coast Guard photo by Petty Officer 2nd Class Ann Marie Gorden.