There were violent clashes between protesters and law enforcement Friday: Police let off flash-bangs, fired pepper spray canisters and arrested around 100 people.
Around 28,000 officials were employed as part of the inauguration's security plan. These included police from departments within and outside D.C., the Coast Guard, the National Guard, Transportation Security Administration personnel and Secret Service, Homeland Security Secretary Jeh Johnson said one week before the ceremony, NPR reports.
Here are 24 photos of just some of the inauguration's sprawling security plan in action.
Jeff Sessions is back on Capitol Hill today
Nov. 14, 2017
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