Coast Guard Petty Officer 2nd Class Stephen Malicki uses a side-scan sonar for checks of the Potomac River in Washington, Jan. 20, 2013. Malicki, a diver from Coast Guard Regional Dive Locker East in Portsmouth, Va., was deployed to Washington with other Coast Guard members to support security efforts for the 57th Presidential Inauguration. (U.S. Coast Guard photo by Petty Officer 3rd Class Lisa Ferdinando)