The U.S. Special Operations Command is looking for “leap-ahead” technologies that can give its troops a decided advantage over their adversaries in wars such as those in Iraq and Afghanistan. Defense Secretary Donald H. Rumsfeld announced in January that the command—made up of elite, unconventional warfare units from the Army, Navy and Air Force and headquartered at Florida’s MacDill Air Force Base—is being strengthened so that it can play a bigger role in U.S. military operations. Currently, SOCOM consists of about 47,000 personnel, including Army Special Forces, Rangers and specialized helicopter, psychological operations and civil affairs units; Navy SEAL (sea,...