Scott Krantz, a firefighter with U.S. Coast Guard Base Kodiak Fire and Rescue, moves pneumatic shoring equipment into the crawlspace of guest housing at Base Kodiak, Alaska, March 28, 2014, during Ardent Sentry 2014. Ardent Sentry is a NORAD and U.S. Northern Command (USNORTHCOM)-directed exercise focusing on defense support of civil authorities in response to simulated weather, security and disaster contingencies. While Ardent Sentry is primarily a command post exercise, several field training events were conducted at various locations within the USNORTHCOM area of responsibility.