This guy is such a legend, never forget his on screen introduction in ALIENS when everyone wakes up from cryosleep.
(copy and pasted from
http://www.moviequotedb.com/movies/aliens/character_122.html )
"All right sweethearts, what are you waiting for, breakfast in bed? Another glorious day in the corps. A day in the Marine Corps is like a day on the farm. Every meal is a banquet. Every paycheck a fortune. Every formation a parade. I LOVE the corps!".
The fact he served time in VIETNAM for real (nope not acting, actual military service) and got two purple hearts and a notable promotion while on tour?
Credit to the man.
In fact not to sound PC but I think "THE BLACK PANTHER" (2018) is disrespectful to actors who, in light of what BLACK PANTHER claims, have gone before that MARVEL film hit.
Immediately I thought, reading BP press release, "never have African actors ever had such a limelight front or centre of a film production". My immediate thought was "Excuse me! Spare a thought for Al Matthews he worked on a (mixed race) movie in ALIENS and no-one made a big deal about it. Cause it had more equality and didn't discriminate (positive or negatively) towards race and sex, not even mentioning it or over-compensating. Let alone Al Matthews did military service in VIETNAM".
Bit young to get the Grange Hill (a very long running UK TV drama series about a fictional high school in London) reference but looked it up. Wow that explains why he got the ALIENS gig (cause it was filmed in or near London in the 1980s).