U.S. Army Sgt. Carlos Zacarias, 416th Theater Engineer Command firefighter, hammers a 151-pound striking block during the Iron Mike competition at Joint Base San Antonio-Randolph, Texas, March 18, 2026. The striking block is part of a machine meant for training and conditioning that utilizes the chopping motion used throughout the career of a firefighter. (U.S. Air Force photo by Airman 1st Class Kevin Jones)

U.S. Army Sgt. Shane Mitchell, 416th Theater Engineer Command firefighter, drags a simulated victim as part of the Iron Mike competition at Joint Base San Antonio-Randolph, Texas, March 18, 2026. Mitchell dragged the 150-lb. training dummy 25 yards in the first of five stations encompassing the challenge course. (U.S. Air Force photo by Airman 1st Class Kevin Jones)

U.S. Army Spc. Cesar Calvillo, 416th Theater Engineer Command firefighter, relays to his teammates outside the structure that there were no victims found during a simulated fire at Joint Base San Antonio-Randolph, Texas, March 18, 2026. Calvillo searched through smoke for two minutes before determining the building was unoccupied. (U.S. Air Force photo by Airman 1st Class Kevin Jones)

William Amerson, U.S. Air Force firefighter captain assigned to the 902d Civil Engineering Squadron, explains to U.S. Army 416th Theater Engineer Command firefighters what scenario they are being tasked with during training at Joint Base San Antonio-Randolph, Texas, March 18, 2026. The scenario involved a simulated car crash with a victim trapped inside the wreckage, needing extraction to be treated for injuries. (U.S. Air Force photo by Airman 1st Class Kevin Jones)

U.S. Army Spc. Michael Conrad, 416th Theater Engineer Command firefighter, hoists a fire hose roll to the top of the four-story training tower during the Iron Mike competition at Joint Base San Antonio-Randolph, Texas, March 18, 2026. The 50-pound hose roll tested firefighters’ strength and endurance as the last station of a relay event. (U.S. Air Force photo by Airman 1st Class Kevin Jones)

U.S. Army Spc. Maxwell Loffredo, left, and U.S. Army Spc. Raif Miller, firefighters assigned to the 416th Theater Engineer Command, don their personal protective equipment prior to entering a simulated structure fire at Joint Base San Antonio-Randolph, Texas, March 18, 2026. Self-contained breathing apparatuses supply firefighters with clean air, allowing them to operate in environments where smoke, toxic gases, or other harmful substances have affected the surrounding air. (U.S. Air Force photo by Airman 1st Class Kevin Jones)

U.S. Army Spc. Maxwell Loffredo, 416th Theater Engineer Command firefighter, lifts a ladder during a training scenario involving a simulated fire at Joint Base San Antonio-Randolph, Texas, March 18, 2026. The ladder allowed Loffredo to make entry through a second-story window to search for potential victims. (U.S. Air Force photo by Airman 1st Class Kevin Jones)