Remembering John as a man of substance, integrity, passion, dedication, caring, and devotion to his family, his work, and other ‘missions’ in life he carried so honorably. A great individual and an unforgettable friend to generations of hydrogeologists. He will always be alive in the memories of his extensive hydrogeologic family. Let the light of his spirit continue to shine for generations to come. My deepest condolences to his nearest and dearest.