Robert Hammond and Joshua David met at a community board meeting in 1999. The future of the then rusting and decrepit High Line was on the docket, and it was very much in doubt. The two joined forces to create Friends of the High Line, a non-profit that led the charge for the preservation and transformation of the disused line rail into a linear park. Today, Hammond announced he will step down as the organization’s executive director, saying, in a statement, “My passion has always been in starting new things, and I am looking forward to pursuing whatever my next project may be. In my heart I am an entrepreneur.”