Military hydrographer Lt. Jose Gonzalez and Aerographer's Mate Airman Jahmal Moore of the Fleet Survey Team retrieve a side scan sonar device from the water after calibrating it aboard a seven-meter rigid hull inflatable boat in preparation for survey operations in support of Ardent Sentry 2013. Exercise Ardent Sentry is an annual NORAD and U.S. Northern Command (USNORTHCOM) exercise focused on Defense Support of Civil Authorities (DSCA) 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)