Security personnel walk on the roof of then White House near Pennsylvania Avenue before Inauguration Day for U.S. President-elect Donald Trump in Washington, U.S., January 20, 2017. REUTERS/Lucas ... more 
Security personnel walk on the roof of then White House near Pennsylvania Avenue before Inauguration Day for U.S. President-elect Donald Trump in Washington, U.S., January 20, 2017. REUTERS/Lucas Jackson less 
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Reuters | Photo By LUCAS JACKSON / Reuters
Fri, Jan 20, 2017 8:14 AM EST