ENGINEER EFFORT U.S. Army and Botswana Defense Force engineers improve an existing pond used for watering livestock and some agricultural needs in a small village near Mkankake Range in Botswana, Aug. 20, 2012. The engineers are participating in Southern Acord 2012, an annual joint exercise to enhance military capabilities and interoperability. The U.S. engineers are assigned to engineers the 631st Engineers Company. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 069508-M-WUU68-689.jpg Photo Gallery