"We know of no specific credible threat directed for inauguration. However, that is only part of the story," Johnson stated. "Different agencies have estimated a crowd on inauguration day of somewhere between 700,000 and 900,000 people."
Johnson also stated that as many as 99 protest groups have applied for permits to demonstrate in Washington, DC during Donald Trump's presidential inaugural on January 20.
"There are 99 groups planning series of protests in Washington, DC during the three day inaugural," Johnson told reporters. "There are 63 demonstration groups scheduled to exercise their First Amendment rights in public areas on the day of the inauguration."
Johnson also urged reporters to read the Department of Homeland Security’s (DHS) most recent National Terrorism Advisory System Bulletin in order to understand why the extra precautions and personnel are being put in place.
"DHS is especially concerned that terrorist-inspired individuals and homegrown violent extremists may be encouraged or inspired to target public events or places," the bulletin observed.
Some 20,000 law enforcement, military and security personnel will be present when Trump takes the oath of office on January 20.