Orange County station KDOC-TV will show John Karlen's 1979 "Quincy" appearance as a Marine Sgt. in "Semper Fidelis" (though it's listed (URL)as "Hero") tomorrow, April 18 at 10 a.m.. Check your listings for the channel number in your area.Dennis Patrick's ep "An Ounce of Prevention" airs the following day (Wednesday).