Terrorist attacks can happen anywhere, at any time. And while the Department of Homeland Security and law enforcement officials across the country are doing everything they can to protect us, the reality is they can’t defend us against all threats, at all times. Americans must come together to stop attacks by learning what to look for and what to report.

Brought to you by Dan Verton, a former military intelligence officer, award-winning journalist, and founder of Homeland Security Television, Left of Boom brings you more than a decade of counterterrorism training in a quick and easy to read guide to detecting terrorist plots before they happen. We all have a role to play when it comes to preventing terrorism. Left of Boom brings you inside the terrorist attack cycle and reveals how many terrorist plots include operational acts that can be observed by average citizens.

The history of terrorist attacks in the U.S. and Europe is riddled with examples of how citizens saw something suspicious but didn’t report it. And while there may be many reasons for the lack of such reporting, one of the biggest challenges stems from the lack of training in what to look for. We’ve been told to say something when we see something suspicious. But we’ve never been told what to look for.

Until now.

In Left of Boom—a phrase used by military and homeland security professionals to describe the time period, activities, and precautions in place leading up to an attack—Dan Verton provides you the information you need to understand the terrorist groups and emerging threats facing our communities, as well as the pre-attack operational acts that most terrorists undertake to carry out their attacks. Armed with this knowledge, average citizens can alert authorities to suspicious activities (even right up to the last minute) and potentially save lives.