"TK-421 why aren't you at your post? TK-421, do you copy?"   A phrase last uttered to one of the first MIA Stormtroopers in the Galactic Civil War. To this day every Stormtrooper wears the title "TK" with pride, but what does the acronym "TK" truly mean? The other various tags in the 501st Legion have reasonable meanings assuming that the "T" stands for trooper you have TD for Trooper Desert; SL for Sith Lord and so on. But what does the K in "TK" stand for? I am new here and want to know what