Taken for granted that a detective would be a martial arts master
I always thought it was so weird that there was no mention of Gino's martial arts training or any background given to it whatsoever. He just happened to be an NYPD narcotics detective who could stick fight with a Kali master and throw people with Kotagaeshi.
I don't understand why the producers and writers couldn't have just inserted even a few lines of dialogue making up some backstory. It would have been somewhat more realistic.