These are little opportunities to intercept those pollutants before they enter the harbor, and they're produced by impatients on various city blocks in some very interesting ways.

And for me, one of the most profound stories someone shared with me, that then became my story, was for those of you who haven't seen the film, and it's not a spoiler it's very common there are a lot of civilian accidents, where people get in front of Humvees and they get killed.