Army Sgt. Burton Atkinson tests water samples that his team purified in Minot, N.D., on June 26, 2011. His team of water purification specialists is working to create safe and sterile water for the local hospital after civilian officials sent out a boil order for residents of the flooded city. Atkinson is a water purification noncommissioned officer assigned to the 132nd Quartermaster Company, North Dakota National Guard.