2009 Annual Report 1a.Objectives (from AD-416) Through a joint USARIEM/MRMC and BHNRC/USDA biomedical research initiative, develop practical biomedical models of human energy metabolism. 1b.Approach (from AD-416) USDA’s BHNRC will host an applied mathematician supported as a MRMC TATRC-funded IPA from the University of Tennessee. As a visiting scientist at BHNRC/USDA to jointly develop advanced mathematical models to predict the water and metabolic fuel requirements of physically active humans. 3.Progress Report Through this agreement, BHNRC/USDA and the U.S. Army Research Institute of Environmental Medicine are working to develop advanced mathematical models to predict the water and metabolic fuel requirements of physically active humans. Activities under this agreement are monitored through email, phone calls, and site visits.