LHO's fourth-Friday public tour occurred on the afternoon of 11/27.  Arrival time at LSB = 3:00 - 4:00 PM.  Departure time = 4:45 - 5:15 PM.  Group size = ~30 adults & kids.  Vehicles at the LSB = ~12 passenger cars.  The group was on the overpass near 4:00 PM and in the control room from about 4:00 to 4:40.