A Navy pilot whose training airplane crashed Saturday in Lake Pontchartrain is presumed dead, and the search has shifted from a rescue to a recovery mission, a Navy spokesman said Monday. As of Monday afternoon, the Coast Guard was still searching for the pilot, said Coast Guard Petty Officer Jaclyn Young in New Orleans. Navy Lt. Clinton Wermers, 33, a native of Mitchell, S.D., was an instructor pilot aboard a T-34C Turbomentor airplane that also carried a Navy student aviator who survived the crash, Navy spokesman Jay Cope said Monday. The aviators were assigned to Training Squadron Six, based at...