Rescuers using small boats, a helicopter and a C-130 aircraft searched a portion of the Chesapeake Bay today for missing diplomat and publisher Philip Merrill, whose sailboat was found adrift last night, Coast Guard authorities said. Officials from the Maryland Natural Resources Police and the Coast Guard began searching overnight the area between the Chesapeake Bay Bridge and the point where his boat was found, which is roughly 20 miles south of Annapolis. The search area is roughly 25 miles by 8 miles, said Coast Guard Lt. Commander Adam Mach. Rescuers using small boats, a helicopter and a C-130 aircraft...