... Guard Force strength (000s) 60 50 40 30 20 10 8-2 8 8-2 9 8-3 0 8-3 1 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 Date SOURCE: U.S Army, Institute of Land Warfare, “Natural Disaster Response: Hurricane Katrina, ” ... of Army Active-Duty Units Aviation Support forces Headquarters staffs Corps of engineers Infantry/security forces Force strength (000s) 8-2 8 8-2 9 8-3 0 8-3 1 9-1 9-2 9-3 9-4 9-5 9-6 9-7 9-8 9-9 ... issues, and command and control, see Lynn E Davis et al., Army Forces for Homeland Security, Santa Monica, Calif.: RAND Corporation, MG-221-A, 2004, pp 31–37 xiv Hurricane Katrina: Lessons for Army...