Former Secretary of the Section of Homeland Protection Janet Napolitano offers an insightful evaluation of American security at home and a prescription for future years.

Created in the wake of the greatest tragedy to occur on U.S. soil, the Division of Homeland Protection was handed a sweeping mandate: make America safer. It could encompass cleverness and law enforcement agencies, oversee organic disasters, commercial aviation, border protection and Glaciers, cybersecurity, and terrorism, about How Safe Are We?: Homeland Security Since 9/11 among others. From 2009-2013, Janet Napolitano ran DHS and oversaw 22 federal agencies with 230,000 workers.

In How Safe and sound Are We?, Napolitano pulls no punches, reckoning with the critics who contact it Frankenstein’s Monster of authorities work amok, and taking a hard go through the problems we’ll end up being facing in the foreseeable future. But ultimately, she argues the huge, multifaceted section is vital to our nation’s security. A company that’s part terrorism prevention, part intelligence agency, part law enforcement, public safety, devastation recovery make for an odd combination the protocol-driven, tradition-bound Washington D.C. lifestyle. But, she says, they have made us more safe, protected, and resilient.

Napolitano not only answers the titular issue, but grapples with how these security efforts have changed our nation and culture. Where are the failures that leave us vulnerable and what offers our 1 trillion money investment yielded during the last 15 years? And why haven’t we’d another massive terrorist attack in the U.S. since Sept 11th, 2001? In our current political weather, where Donald Trump provides politicized just about any aspect of the department, Napolitano’s clarifying, vivid vision is necessary now more than ever.