Subway Ride to Coney Island, Part 1: Graffiti

I love the ride out to Coney Island on the D and F trains. Once you come up from underground, there's a great view of the diversity that defines Brooklyn. On the elevated tracks it's especially easy to get a look at the graffiti that adorns so many buildings. Some of it is actually quite artistic and rises above the level of the ordinary "tags." There are even buildings that have had nearly every square foot of available wall and roof space covered. I'm always curious about the acrobatics that must have been performed to reach some of the more precarious locations. How do they get up there?!