the tower portion of 3 world trade center was to be fully built after meeting the requirements. a spokesperson speaking on the issue of rebuilding the site commented: "three wtc should be up by 2015; although; we do have one milestone to hit: we need to get a 400,000-square-foot tenant in order to get a financing backstop that makes sure we will complete that building. so, that's a question mark, and it's a major priority of silverstein properties". the port authority believes that the 2010 agreement will allow market demand to drive the construction of the towers and help to limit public investment since the port authority has other projects that need attention in the region.