Northern Challenge Navy explosive ordnance disposal technicians assigned to U.S. 6th Fleet Naval Expeditionary Task Force Europe participate in exercise Northern Challenge 2018 in Keflavik, Iceland, Sept. 20, 2018. Northern Challenge is an annual explosive ordnance disposal and counter improvised explosive device exercise hosted by Iceland that provides the opportunity to engage in realistic training, build experience and strengthen interoperability. SHARE IMAGE: Download Image: Full Size (0.29 MB) Tags: Navy Photo By: Navy photo VIRIN: 180920-N-N0901-009C.JPG Photo Gallery