Water flows to drains in the floor of hangar five during a biennial fire suppression system test, Feb. 19, 2015 at Ramstein Air Base, Germany. The test is done to ensure the system is working properly and can effectively exstinguish possible fires in the future. ( Air Force photo/Airman 1st Class Larissa Greatwood)

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Size: 1913px × 1307px
Photo credit: © PJF Military Collection / Alamy / Afripics
License: Licensed
Model Released: No

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