This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
U.S. Sailors dawn their gas masks during simulated chemical biological radiological attack scenario aboard the amphibious dock landing ship USS Comstock LSD March while under way in NRC. en Sailors dawn their gas masks during simulated chemical biological radiological attack scenario aboard the amphibious dock landing ship USS