While World Trade Center site Tower 1 is on its way up, there hasn’t been much development going on at the site otherwise, according to an NBC tour of the site. Most significant could be the lack of progress at World Trade Center towers 2, 3 and 4, which have not been completely funded. In terms of construction, “2 and 3 — there’s nothing’s happening; 4 — a few floors perhaps.” And at the site of the performing arts center, funded by the city, “there’s nothing happening on that either.” The memorial and museum is supposed to be partially open some time next year and the transit hub is slated to open, at least partially, in 2013. Meanwhile, at the end of last month, the Port Authority of New York & New Jersey unveiled a video which showed about 95 percent of the 9/11 Memorial steel had been installed, while the subterranean Memorial Museum had taken its first steps toward fruition. One World Trade Center, that video shows, had reached the 20th floor in its construction.