Mark Harmon and David McCallum
M.H - To me, if he were in Trek, or Trek fan fic, he would be a Captain/Commodore/Admiral... He MIGHT also be a choice for McCoy's father - Perhaps, he worked on a Medical Ship
Actors & Actresses I Could Use To Envision Supporting Role Characters in my fan fic
Mark Fields addressing the worldwide media at NAIAS.
Qui est Mark Fields?
http://www.forensiccareersinfo.com/ has some info on the field of forensics and some forensic related occupations.
Mark Harmon getting his star on the Hollywood Walk Of Fame 2012
Hair shading detail More
field 12 (detail 7) graphite/carbon on paper emma mcnally
Drawing, painting, print
Dorothy Caldwell. "Sown Field"