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Kopp-Etchells: Helicopter 'halo' effect named in honor of two fallen heroes

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PSJA Memorial Army JROTC cadet Lee Ortega, right, stands in formation as he waits for the funeral procession of U.S. Army Warrant Officer Jose Luis Montenegro Jr., Wednesday Sept. 19, 2012 on Business 83 in San Juan, Texas. Montenegro was stationed at Fort Bragg, N.C. and was serving his third tour of duty overseas when his helicopter was shot down in Afghanistan's Logar province. Credit: AP

I've seen the Kopp-Etchells effect captured in fascinating images from Michael Yon, but until now, I never knew the full story behind how the helicopter "halo" got its name.

Fox News reports on how the battlefield phenomenon was named in honor of two fallen heroes:

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