Service dog Valhalla looks up at her owner, Air Force Senior Airman Hannah Stolberg of Team Air Force, as teams competing in the 2017 Department of Defense Warrior Games arrive at O'Hare International Airport in Chicago, June 28, 2017. The Warrior Games are an annual event allowing wounded, ill and injured service members and veterans to compete in Paralympic-style sports including archery, cycling, shooting, sitting volleyball, swimming, track and wheelchair basketball. Navy photo by Petty Officer 1st Class Patrick Gordon