U.S., Korean firefighters conduct joint fire training

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018.

Firefighters from the 51st Civil Engineer Squadron assist each other in donning their protective equipment at Osan Air Base, Republic of Korea, March 26, 2018. U.S. and Republic of Korea Air Force firefighters worked together in a live fire training exercise to improve communications and their ability to work together under stress. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018.

Airman Marcus Gray, 51st Civil Engineer Squadron firefighter, dons protective clothing during a live fire training exercise on Osan Air Base, Republic of Korea, March 26, 2018. U.S. and Republic of Korea Air Force firefighters worked together in a live fire training exercise to improve communications and their ability to work together under stress. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018.

A gas mask and hood sit on a table during a live fire training exercise on Osan Air Base, Republic of Korea, March 26, 2018. Firefighters wear specialized gas masks that filter out carbon dioxide, which are attached to a tank of compressed air that provides breathable air for the firefighter. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018.

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018. The exercise allowed the U.S. and ROKAF firefighters to practice communications and improve their ability to work together under stress. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018.

A Republic of Korea Air Force firefighter prepares for a live fire training exercise on Osan Air Base, Republic of Korea, March 26, 2018. Korean and U.S. Air Force firefighters worked together in the exercise to improve communications and their ability to work together under stress. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

U.S. and Republic of Korea Air Force firefighters work together to put out a fire during a training exercise on Osan Air Base, Republic of Korea, March 26, 2018.

A U.S. flag is sewn onto an Air Force firefighter’s protective gear at Osan Air Base, Republic of Korea, March 26, 2018. U.S. and Republic of Korea Air Force firefighters worked together in a live fire training exercise to improve communications and their ability to work together under stress. (U.S. Air Force photo by Staff Sgt. Benjamin Raughton)

OSAN AIR BASE, Republic of Korea --