There are not too many iconic American heroes any more. Here are two, together, slalom skiing, no life jackets, in 1962.
Unissued / Unused material - Title reads: "Mrs Kennedy And Glenn Water Ski". American voiceovered newsreel material. Hyannnis Port, Massachusetts, United States of America (USA). LV "Marlin", the Kennedy family yacht. LV In the stern of "Marlin" can be seen President John F Kennedy, his father Joseph Kennedy, and brother Edward 'Teddy' Kennedy.
(Originally found on boston.com)