This photo was taken at the Drexel Armory in Philadelphia. The Drexel Aikido club held a seminar there some time around 2002 or a bit earlier. The seminar occurred shortly after Sensei Wirth decided to move to using colored belts for the kyu ranks.
Here, Sempai Michael Allen is demonstrating a choke hold finish with Sempai Mesut Pervizpour as uke. He is taking a 1st kyu test wearing a brown belt from the older grading scheme.