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 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)