Pvt. Phillip Faulkner, a soldier research volunteer, walks May 6, 2009, on a treadmill as part of a study by the U.S. Army Research Institute of Environmental Medicine, Natick, Mass. The lab is studying the use of natural supplements to improve physical performance. Much of the institute’s research is conducted using data collected from soldiers recruited to take part in the studies. Pvt. Phillip Faulkner, a soldier research volunteer, walks May 6, 2009, on a treadmill as part of a study by the U.S. Army Research Institute of Environmental Medicine, Natick, Mass. The lab is studying the use of natural supplements to improve physical performance. Much of the institute’s research is conducted using data collected from soldiers recruited to take part in the studies. SHARE: Download: Full Size (3.3 MB) Tags: Photo Essays Credit: VIRIN: 656456-G-MOA59-666.jpg Photo Gallery