The 2019 Legacy Parks Foundation luncheon will feature guest speaker David McClain, a National Geographic adventurer and member of the Blue Zone exploration team, which documents the Blue Zones – the five places in the world where people most likely to live past 100 years. His photographs have appeared in National Geographic, National Geographic Traveler and National Geographic Adventure, as well as Men's Journal, Sports Illustrated, Skiing, Wine Spectator and Fortune. Sponsorships, reserved tables of 10 and individual tickets are…