From the get-go Rob states that obtaining this type of data is difficult, and explains why. I fully accept His summation at the end, supported by the data that is available.
SGT James Murphy,
CPT Jack Durish,
SPC Gary Welch,
SGT Mark Anderson,
CPL Douglas Chrysler,
Maj Marty Hogan,
1SG Steven Imerman,
SMSgt David A Asbury,
MSgt Robert "Rock" Aldi, MSgt David Hoffman,
SSG Michael Noll,
MAJ Dale E. Wilson, Ph.D.SGM Erik Marquez,
CW3 Harvey K. SFC William Farrell,
CPL Ronald Keyes JrSgt (Join to see),
SSG (Join to see)