Maj. Gen. William Thigpen, U.S. Army South Commanding General and Multinational Forces South Commander of PANAMAX 2022, speaks to participants of PANAMAX 2022 at the Joint Base San Antonio-Fort Sam Houston Theatre Aug. 1. PANAMAX 2022, a U.S. Southern Command-sponsored multinational command post exercise aimed at reinforcing and enhancing the long-term security of the Panama Canal and the Western Hemisphere, took place Aug. 1-12, at bases in Texas, Florida, Virginia and Arizona.