Former Navy SEAL Clint Emerson talks about water preparedness for survival in this 5.11 Tactical video... "Second only to oxygen, water is the most important resource for human survival ? If the tap stops running, you better have enough water on-hand or the means of finding and purifying it for you and your loved ones. Retired Navy SEAL and bestselling author, Clint Emerson explains the importance of water in any preparedness scenario."