Home U.S. Army Staff Sgt. Tiana Trent, an avenger master gunner in the 5th Battalion 4th Air Defense Artillery Defense Regiment, halts the Stryker in position for staging, March 9, 2022, near Rutja, Estonia. (Army National Guard Sgt. Ryan S. Gay) U.S. Army Staff Sgt. Tiana Trent, an avenger master gunner in the 5th Battalion 4th Air Defense Artillery Defense Regiment, halts the Stryker in position for staging, March 9, 2022, near Rutja, Estonia. (Army National Guard Sgt. Ryan S. Gay)