Lost and Confused Pilot

A pilot called in and said he was unsure of his position but he had a town in sight. Since we didn't have him on radar, the controller told him to descend and look for the town's water tower, see what it said on the side, climb back up and tell him. Sure enough in about 3 minutes the pilot called back and said "Approach, I found the water tower". The controller, looking rather pleased, asked "And what did it say on the side?". The pilot replied "It said Seniors, 1978". Truly happened.