first of all its Hollywood is the generic term for movies not TV...
Err, no, the American television industry is based in Hollywood. Sure, a lot of the actual filming is done in Vancouver, but the production companies that make the shows are in Hollywood.
third - its a TV show and using a plot about crazy ex members of the U.S armed forces who are trying to blow up a city DOES not insult your own armed forces because its just a plot device in a drama comedy show at 10pm.
Now, this is quite right. Portraying a few renegade members of the military is not an insult to the military, any more than portraying, say, a dentist or a magazine editor as a murderer in a Castle
episode is an insult to the professions of dentistry or editing. It's the individuals that are to blame, not their organizations.