24 September 2020 Japan Self-Defense Forces, U.S. military to begin exercise Keen Sword, Oct. 26 Units from the Japan Self-Defense Forces (JSDF) and U.S. military will conduct exercise Keen Sword beginning Oct. 26, 2020.Keen Sword is the latest in a series of joint/bilateral field training exercises since 1986 designed to increase combat readiness and interoperability of the JSDF and U.S...