A 59-year-old janitor missing a hearing aid darted into a MetroRail train Wednesday at Reliant Park, then the ambulance carrying him to the hospital was hit by a car one minute into the trip, injuring four more people. Donnie Hall, who works for a temporary agency cleaning Reliant Stadium, was on his way home when he walked in front of the southbound train approaching the Reliant Park Station platform about 4 p.m., said Metropolitan Transit Authority spokesman Ken Connaughton. Hall had apparently seen a northbound train at the station and hurried to get on board for his trip to his...