In this photo provided by the Port Authority of New York and New Jersey, one of the last two segments of the silver spire to be installed on top of One World Trade Center is hoisted on May 2, 2013. (AP/Port Authority of New York and New Jersey)
Photos: One World Trade Center topped
Take a look at the process of hoisting a silver spire on top of One World Trade Center, bringing the iconic structure to its full, symbolic height of 1,776 feet.
TSA policy on knives sparks backlash
Fliers react to knives-on-planes policy
Photos: World Trade Center graffiti
