Chris Williams : Ex - NFL player who swam 16 hours to safety showed strength , determination , courage . She knew a well - prepared long - distance swimmer would find it difficult , especially against sharks . A pro football player knows pain . Nyad : He pictured his family to motivate him . NFLers know about endurance . He was a Dolphin .
Chris Williams : Ex - NFL player who swam 16 hours to safety showed strength , determination , courage . She knew a well - prepared long - distance swimmer would find it difficult , especially against sharks . Nyad : He pictured his family to motivate him . NFLers know about endurance . He was a Dolphin .