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647 CES holds chemical, biological, radiological and nuclear defense refresher course

U.S. Air Force Airmen step outside of a gas chamber on Joint Base Pearl Harbor-Hickam, Hawaii, August 21, 2025. Participants verified their gas mask seal inside the gas chamber, then removed it to test their resilience in a contaminated environment. (U.S. Air Force photo by Airman 1st Class Aden Brown)

PHOTO BY: Airman 1st Class Aden Brown
VIRIN: 250821-F-HW521-1866.JPG
FULL SIZE: 4.18 MB
Additional Details

CAMERA

NIKON Z 9

LENS

NIKKOR Z 24-70mm f/2.8 S

APERTURE

16

SHUTTERSPEED

1/125

ISO

250

IMAGE IS PUBLIC DOMAIN

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This photograph is considered public domain and has been cleared for release. If you would like to republish please give the photographer appropriate credit. Further, any commercial or non-commercial use of this photograph or any other DoD image must be made in compliance with guidance found at https://www.dimoc.mil/resources/limitations, which pertains to intellectual property restrictions (e.g., copyright and trademark, including the use of official emblems, insignia, names and slogans), warnings regarding use of images of identifiable personnel, appearance of endorsement, and related matters.

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