Bad week for aviation. Destruction at Sun n' Fun, the Southwest drop-top, and now Gulfstream has lost a G650 and four flight test crewmembers.
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Kent Crenshaw, Gulfstream's Chief Test Pilot, was a former CC of the 6519th Test SQ (now the 419th FLTS at Edwards), the B-2 Chief Test Pilot for Northrop Grumman, a BUFF pilot in Vietnam, and a laundry list of other quals and accomplishments.
Vivan Ragusa was a former USN test pilot who flew the X-31.