4 World Trade Center. (credit: Peter Haskell, WCBS 880)
Topping Off Ceremony For 4 World Trade Center
Construction workers sign the last steel beam before it is hoisted 977 feet to the top of 4 World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
Construction workers Danny Conca (L) and Brian Shelly hold an American Flag attached to the last steel beam, signed by members of the crews that helped build the tower, as it is hoisted 977 feet to the top of 4 World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
With developer Larry Silverstein (yellow tie) behind him, construction worker Frank Gasior (C) watches as the last steel beam, signed by members of the crews that helped build the tower, is hoisted 977 feet to the top of 4 World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
The final beam of 4 World Trade Center is lifted by a crane on Monday, June 25, 2012 (credit: Peter Haskell.WCBS 880)
Topping Off Ceremony For 4 World Trade Center
Workers sign the final beam of 4 World Trade Center on Monday, June 25, 2012 (credit: Peter Haskell.WCBS 880)
Topping Off Ceremony For 4 World Trade Center
Construction workers sign the last steel beam before it is hoisted 977 feet to the top of 4 World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
Construction workers Danny Conca (L) and Brian Shelly hold an American Flag attached to the last steel beam, signed by members of the crews that helped build the tower, as it is hoisted 977 feet to the top of 4 World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
Construction worker Ken Apple signs the last steel beam, along with other members of the crews that helped build the tower, before it is hoisted 977 feet to the top of Four World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
Developer Larry Silverstein (yellow tie) and Assembly Speaker Sheldon Silver (C) watch as the last steel beam, signed by members of the crews that helped build the tower, is hoisted 977 feet to the top of 4 World Trade Center on June 25, 2012 in New York City. (Photo by Spencer Platt/Getty Images)
Topping Off Ceremony For 4 World Trade Center
Workers sign the final beam at 4 World Trade Center on Monday, June 25, 2012. (credit: Stan Brooks/1010 WINS)
