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Saturday, July 27, 2013

Kopp-Etchells Effect

The corona effect from helicopter rotor blades in Afghanistan, and named the "Kopp-Etchells Effect" by war correspondent Michael Yon, after Cpl. Benjamin Kopp and Cpl. Joseph Etchells, who were killed in action.

Not sure why now, since Yon was writing about this back in 2009, but London's Daily Mail reports, "Mesmerizing halo effect caused by blades of landing combat helicopters named in honor of two fallen soldiers."

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