Secretary Gates places his coin at each of the photo memorials inside the Stryker Tepee Memorial. Secretary of Defense Robert M. Gates places his coin at each of the photo memorials inside the Stryker Tepee Memorial dedicated to their fallen comrades during a visit with the 1st Battalion, 17th Infantry Regiment at a forward operating base in Afghanistan on March 9, 2010. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 150163-L-YRA48-289.jpg Photo Gallery