Former secretary of Homeland Security Janet Napolitano prepares to testify before the Senate Judiciary Committee in 2013. She has written a new book called How Safe Are We?
Chip Somodevilla/Getty Images
Guards stand in front the Bataclan concert hall in Paris in November 2018, during a ceremony to remember the victims of the attacks in November 2015. On Friday, a man who rented an apartment to two fleeing terrorists received a four-year prison sentence.
Benoit Tessier/AFP/Getty Images
House intelligence committee Chairman Adam Schiff, D-Calif., and other House Democratic chairs are pushing forward with investigations of related to President Trump following the report from special counsel Robert Mueller on the 2016 election.
J. Scott Applewhite/AP
Russian agent Maria Butina in an undated booking photo in Alexandria, Va. U.S. District Judge Tanya Chutkan announced Thursday that Butina will be sentenced in late April.
Alexandria Sheriff's Office via
An aerial view of Offutt Air Force Base and the surrounding areas affected by floodwaters in Nebraska on March 17. One-third of the base was covered by water from flooding.
Tech. Sgt. Rachelle Blake/U.S. Air Force via AP
Facebook announced Wednesday that it will ban white nationalism and separatism content starting next week. "It's clear that these concepts are deeply linked to organized hate groupsand have no place on our services," it said.
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Russ Travers is the deputy director of the National Counterterrorism Center. "On a daily basis, 10,000 reports come across our (operations) center and eyes are put on every one of those," he says.
Jennifer Redding/National Counterterrorism Center