Sounds like they are there as a _reactive_ force meaning they act on something happening but they don't seek out issues. They are likely lightly trained and the

Sounds like they are there as a _reactive_ force meaning they act on something happening but they don't seek out issues. They are likely lightly trained and their presence is half the battle. As another commenter mentions, cops are sent to problematic BART stations but constantly end up gathered in a bunch and mostly paying attention to one another.