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What happened when WWII flak shells fell back to Earth

Anti-aircraft guns protected cities from bombing raids, but the danger did not end in the sky. Exploding shells scattered ...
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Why you may hear whistling and exploding shells in downtown Harrisburg

HARRISBURG, Pa. (WHTM) — A crow dispersal program is set to begin Monday at the State Capitol Complex, and you may hear exploding shells. The Pennsylvania Department of General Services will begin the ...