Take Route 41 to "Old Elm Road". Turn east onto Old Elm Street and follow to Sheridan Road. Turn right (south) onto Sheridan Road and follow for about 1/2 mile to the main entrance for Fort Phillip Sheridan on the left. Go through the gates to the first large parking lot on the right and Bldg. 599 will be to the back side of the parking lot.
Remember, you must be in the classroom before roll call at 6 p.m. or you will lose your seat.