Calvert County Maryland Sheriff’s Office vehicles at Cove Point Lighthouse, Chesapeake Bay.

PRINCE FREDERICK, MD. On December 9, 2015, Deputy C. Ward was on a lookout for a vehicle reported to be driving recklessly all over the road.

MATTHEW MERCER Calvert Sheriff 121415

He stopped the driver, Matthew Mercer, 42, of Martinsburg, WV and arrested him for driving under the influence of PCP and several other traffic offenses.