Not even involved a little bit but as a LEO, there would be absolutely -no fucking way- I would've stood there for more than 30 seconds. You're asking for trouble. You may not be "surrounded" in the sense that everyone has formed a circle around you but you are in a mexican territory talking to mexican individuals about drug trafficking. Dude, that was a bad situation and you should've gotten out right when you got in. Once again, not involved but common sense has to be a part of an officer's toolkit.