How can my young son learn Mandarin Chinese safely, without Communist influence?

I knew that surcharge at the Commissary was being put to good use.

SP5 Peter Keane - ☺
I assume you mean the post exchanges, but every little bit helps!

Years ago as a junior high school student I was fortunate to take Mandarin for two years for a native speaker. We spent a LOT of time in San Francisco on weekends in Chinatown where Mandarin was spoken but we got better treatment speaking Cantonese and learned small amounts of Shanghainese. Many years later I found my old skills benefitted me in intel assignments. The key is, learn when you are young and the brain is most adaptable to new languages. If he is learning it in CONUS it's unlikely a sympathizer would be teaching it. 祝你兒子好運！(good luck to your son!)

CDR Jim M. - "I Wish Your Son Good Luck"
Having A Native Speaker Of The Language Being Taught Is Imperative...
Although Many Gringos Speak Spanish, MOST Have That "Gringo Accent", Including The Teachers, If They're Not Native Speaking Teachers
Oddly Enough It Was My Sister-In-Law, Andrea, Whom Taught Me To Pronounce The Words Properly.... It's Simply By Learning The CORRECT Sounds Of The Vowels ~ ~
~~ BOOM, It's A Home Run !! ~~ Just THAT Easy, And Only Takes A Few Minutes.

LOL... And How Well Does She Handle Her New Name?
With A Lot Of Humor, I Hope ~~ It IS Funny

I explained it to my daughter once, as she was regaling me with the finer points about Spiderman's gloves, that the human brain is like an old computer hard drive. It can only hold so many bytes. When it gets full, it begins to overwrite older stuff. So she needed to be careful telling me such details or it might fill my brain up and overwrite something I needed to remember, like how to breathe. She did not get it.

SSG Roger Ayscue -
~"OOPS"~.
Not Long Ago I Was Wondering "Why Do Some People Seem To Remember More Things Than Others"?.. And This Is What I Discovered ~ Read ~ Deduced ~ Etc. ~ In Our Brains Grey Matter, There Are Various Sections, With Some Larger Than Others And They're Similar To Files ~ The Larger The Files, The More Information They Can Retain...,
~~ I Thought It To Be Quite Interesting & It Does Help To Explain "Why I Have Trouble Remembering Who I Am & Why I'm Typing This." (:-)> ~~ It's Old Age, Coupled With Ignorance, And a LOT of Stupidity.. But Most Of What I Just Said IS True....But Which Part?.. Go Ahead ~ Guess!