Jump First, Ask Questions Later

As if running for his life, Mark Toorock sprints away from his pursuer and directly toward a dead end: a 12-foot-high concrete wall with another three feet of metal railing on top. Toorock's split-second advantage is enough to allow him to plant a foot waist-high on the wall, spring up, grab the edge of the concrete with both hands and boost himself up to and over the rail without getting nabbed. By the time this series of fluid movements is complete and the chase scene has ended, Toorock has attracted a crowd and inspired at least a dozen young people milling about in Silver Spring to take up the art of parkour on the spot...More?

source: washingtonpost.com