A 493rd Fighter Squadron pilot from the 48th Fighter Wing, Royal Air Force Lakenheath, England, communicates with a maintenance Airman at Rovaniemi Air Base, Finland, May 25, before taking off in support of Arctic Challenge 2017. The U.S. participants in ACE 17 represent America's forward presence, postured alongside our proven, essential NATO allies and partners. U.S. Air Force photo/Airman 1st Class Abby L. Finkel)