A old fallout shelter sign on the side of an old military fort.

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Size: 5616px × 3744px
Photo credit: © Erin Cadigan / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: air, american, cold, drill, enclosed, fall, fallout, fort, hazard, horizontal, military, nuclear, protection, radiation, raid, safety, security, shelter, shield, sign, space, states, symbol, united, usa, vault, war