From I-81: take Exit 72-A (Former 26-A) Paxtonia.

From northbound ramp, merge into traffic on Mountain Road and move immediately into left lane.  From southbound ramp, turn left onto Mountain Road, stay in left lane.  Turn left at the red light onto Route 22 (Allentown Boulevard).  (Burger King is on the corner.)

Proceed about 3 miles east on Route 22.  After passing the Skyline Restaurant/Diner (on your left) and auto and recreation vehicle dealers (on your right), prepare to turn left onto Clover Lane, just in front of the Tall Timber Motel sign (the motel is no longer there, and it is a vacant lot).  

THEN . . .

After turning onto Clover Lane, before you come to any other streets, turn right into an entrance that is marked with tall flags and signs that refer to "TYNDALE" businesses.    Once you've turned into the drive, there is one building to your immediate left. Excluding the long sidewalk/door that goes off to the Clover Lane side of the building, there are two office doors in the front.  AZTAC is the door on the left.  Park anywhere that is not blocking the drive.