GRAFENWOEHR, Germany -- The annual U.S. Army Garrison Grafenwoehr's force protection exercise took place for the first time in its history in a virtual world. The all-day event held Dec. 2, 2011 at the Joint Multinational Training Command's Simulation Center took place in a digital replica of the USAG Grafenwoehr Main Post. The exercise is implemented once a year to test the reactions and responses of first-responders, as well as the local garrison command structure.