Two Oregon Army National Guard members make notes from the edge of the blast zone after a simulated dirty bomb was exploded during the TOPOFF 4 exercise in Portland, Ore., Oct. 16, 2007. Senior Airman John Hughel

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Size: 1932px × 1293px
Photo credit: © 615 collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 3, 4, air, army, conflict, destruction, force, gas, gmc, guard, mask, mass, military, national, oregon, portl, portland, soldier, soldiers, states, terror, topoff, unclassified, united, war, weapons, wmd,