welcome to wrangler ville, home of looking over everywhere in the safety of your base.
my solution is putting a prop or two (like a radioactive barrel and a tall crate) over the black outline so that while the sentry position there isn't completely useless, you can't just wrangle all over the damn place. plus it provides some cover for people hanging out in the base.
Not the ones on RED's side, I don't think. I remember attempting to jump on them and instead of jumping forward, it forced me to go straight up. Perhaps something quickhidden?
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