Army Sgt. Eric Nickels, left, checks the fuel level of an M1126 Stryker combat vehicle as Army Sgt. Puello fills it up during a railhead operation in support of Atlantic Resolve near Adazi, Latvia, Jan. 14, 2016. Nickels and Puello are assigned to the 3rd Squadron, 2nd Cavalry Regiment, deployed from Vilseck, Germany. Army photo by Staff Sgt. Steven Colvin