Hydrographer In Charge Misty Savell of the Fleet Survey Team checks global positioning system data while her rigid hull inflatable boat navigates rough waters while conducting survey operations in support of Ardent Sentry 2013. Exercise Ardent Sentry is an annual NORAD and U.S. Northern Command exercise focused on Defense Support of Civil Authorities scenarios to support civil authorities, when requested, with military capabilities to save lives, prevent human suffering, and mitigate great property damage. (U.S. Navy photo by Mass Communication Specialist 1st Class Dustin Q. Diaz/Released)