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| Maj. Gen. Charles Lyon holds up a HEPA filter while talking about the oxygen delivery system of the F-22 Raptor during a briefing for the media on the F-22 Scientific Advisory Board findings in the Pentagon Press Briefing Room on March 29, 2012.
DoD photo by Glenn Fawcett. (Released) |
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| 120329-D-NI589-217.JPG |
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