Current Stealth mechanics - questions

Ok, so when does a unit get “located”, when “unrevealed”?

I saw Tritons shooting at me, and remaining only located.
According to your word, any unit, shooting without silenced weapons should get unrevealed, doesn`t it?

Someone wrote in my Infiltrator class Thread:

How could he shoot the Triton without getting unrevealed, if EVERY shot without a silenced weapons get you unrevealed according to your words?
Sorry, that confuses me.