U.S. Army Soldiers with 2nd Battalion, 1st Infantry Regiment, 2nd Stryker Brigade, 2nd Infantry Division, and the 136th Mechanized Battalion of the ROK Army, conduct security during a training exercise, near Dongducheon, Republic of Korea, Jan. 11, 2023. Operation Centurion Blitz was conducted in an urban environment featuring buildings and tunnel complexes assaulted by a combined ground assault force using armored vehicles and dismounted infantry personnel and focused on the exploitation of a simulated chemical weapons site. (U.S. Army photo by Spc. Alison Strout, 20th Public Affairs Detachment)