The Marine Corps said Wednesday it is searching for five Marines who were onboard a helicopter that went missing on its way to San Diego a day earlier. The Marines said civil authorities found the helicopter on Wednesday morning in Pine Valley‚ California‚ about 40 miles east of San Diego. It didn’t describe the aircraft’s condition. The helicopter had taken off from Creech Air Force Base outside Las Vegas on Tuesday for a routine training flight. The helicopter was reported overdue on...