The Pentagon Force Protection Agency (PFPA), in cooperation with Arlington County and other federal and local agencies, will conduct a comprehensive evaluation and operational response to a simulated biological release at the Pentagon on July 11, from 8 a.m. to 1 p.m. The test will provide valuable information for PFPA’s response in the event of a biological release. The test consists of the release of a powder simulating a biological attack at the Pentagon South Parking Lot and the subsequent clean-up. Some 200 volunteers are expected to participate. Key to this test is the use of helicopters landing and taking off from the Pentagn South Parking Lot, and a decontamination unit at the Navy Annex. The simulant powder contains a harmless inert bacterium found in soil, water, and air. A similar test was conducted in 2007. Dependant upon favorable weather conditions, there are four possible days for the test: July 11, 12, 18, or 19.