English: U.S. Army Pfc. Erica Davis, left, a chemical specialist with the 108th Chemical Company, South Carolina Army National Guard uses a power washer to decontaminate vehicles during exercise Ardent Sentry in Ridgeland, S.C., May 19, 2013. A simulated contaminated convoy is processed by the 108th Decontamination Platoon before being allowed entry to the point of distribution to pick up food and water supplies needed for civilians after a natural disaster. 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. Ardent Sentry, conducted May 17-21, 2013, involved a scenario of a hurricane striking the South Carolina coast requiring more than 1,500 members of the South Carolina National Guard to practice disaster response activities and coordination procedures.