Besieged by Druids
It was the summer solstice some years ago. Just before lunch, an email went around to everyone in the office, saying they had locked down the site. The gates had been locked at all but one entrance. Security had set up a checkpoint to make sure we had our pass if we went outside, as they would be strictly checked. It was all very dramatic.
It turned out that some quite upset Druids were laying siege to us. Our office was in a complex with a number of other companies, one of which turned out to be English Heritage. They had blocked access to Stonehenge for the traditional solstice ceremony, and the Druids had come to show their displeasure. Lunchtime that day was a few Druids and many confused office workers.
Happy Solstice