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Source: 'The Sound of Freedom: Naval Weapons Technology at Dahlgren, Virginia,' by James P. Rife and Rodney P. Carlisle
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Dahlgren hosted early studies of aircraft vulnerability to projectiles. After this test, conducted in March 1922, ordnance officers circled with white chalk the fragment holes made by 3-inch high explosive projectiles on this target aircraft. (Dahlgren Historic Collection) |
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