Trident Shield Soldiers take part in Trident Shield 17 at the Mississippi National Guard’s Joint Force Headquarters, Jackson, Miss., July 9, 2017. The exercise tests the Guard’s ability to respond to a hurricane. Air National Guard Photo by Master Sgt. Richard L. Smith SHARE: Download: Full Size (0.94 MB) Tags: guard, national preparedness, army Credit: Master Sgt. Richard Smith VIRIN: 170709-Z-PH162-009.JPG Photo Gallery