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Question. i wonder if it counted for the empire state building which also has a expire on top. why does it matter, rick? >> reporter: there are numerous buildings that haveo -- that have antennas with expires. the builders of one world trade say it does meet the standard. 1,776 is the symbolic number for our country considering the history and the lives that were lost there. but also there are bragging rights at stake here. the willis tower is the callest building. martha: im rooting for new