An F-15C Eagle assigned to the 493rd Expeditionary Fighter Squadron flies over Keflavik Air Base, Iceland, Aug. 6, 2018, in support of NATO’s Icelandic Air Surveillance mission. While providing critical infrastructure and support, Iceland has looked to its NATO allies to provide airborne surveillance and interception capabilities to meet its peacetime preparedness needs since 2008. (U.S. Air Force photo/Staff Sgt. Alex Fox Echols III)