We send 18-19 year olds to war and call them skilled.

So you think this 20 year old is ex military?
Do you think he served a 2 year term and got out with a (dis)honorable discharge?
Or maybe hes just an expert marksman, who has been honing his "skill" at shooting ranges and on COD?
I wouldn't have made the comment if he was 22.
I still think homie was lucky to pull an AK from under his couch and unload on 5 armed men without catching a bullet himself.