I had to watch this from a Sociological and Psychological point of view (Oahu Premiere September 14, 2018, Sunset on the Beach, Hawaii Five Minus Zero Season 9 Episode 1 and this Magnum P.I.).
Obvious Peter M. Lenkov is writing for Millennials and iGen aka Generation Z that together are the largest Demographic (Audience). That since being born long after the Vietnam War cannot connect with the Original Characters of the Original TV Series or Movies that included anything about the Vietnam War.
Also many don't know much, nor even bother to learn anything about Vietnam, Iraq, Afghanistan and all the U.S. Armed Conflicts, as "Historically Illiterate", all you have to do is ask them about Iraq, the first thing they will say is "Bush" and absolutely nothing about Democrat President Clinton's War Against Muslims starting 1993, that would then cause the repeated Revenge Attacks of Osama Bin Laden from 1993 to the 9/11 2001 Attacks, and 1998 Declared War Against U.S. Ally Iraq (War "Inherited" by Bush).
The Reasons that Millennials cannot "connect" (emphasize) with anything U.S. Military, U.S. Military Veterans, is because only 1% of U.S. Citizens have Served the U.S. Military while 99% never Served the U.S. Military according to then First Lady Michelle Obama and Vice President Biden's Wife, Doctor Jill Biden, unlike the Vietnam War that almost the entire U.S. Population was involved in some way as U.S. Military,or as Demonstrators, and as Parents, Family, Relatives of both.
The "Formula" or "Template" being used by Peter M. Lenkov is Millennials have been conditioned (Psychological Programing) to require continious stimulation explosions, sex, car chases, blood, gore, lots of "Special Effect", according to Democrat Vice President Biden's Newtown Massacre Study as demanded by Democrat President Obama this "Coarsing of Our Culture" is the cause of most Mass Murders, School Shootings.