William Queen is the author of the "New York Times" bestseller "Under and Alone" and "Armed and Dangerous," He spent twenty years as a special agent with the U.S. Department of the Treasury, Bureau of Alcohol, Tobacco and Firearms. A Vietnam veteran, Queen devoted his career to law enforcement, serving first as a local police officer and then as a U.S. Border Patrol agent before joining ATF. He is among the country's foremost experts on the violent world of outlaw motorcycle gangs and has lectured widely to law-enforcement organizations in multiple countries. For his ground-breaking undercover
Aaron Cohen grew up in Beverly Hills, California. After spending three years in one of Israel's "black ops" units, Sayeret Duvdevan, he returned home and founded IMS Security, a consulting firm that specializes in protecting politicians, business executives, Hollywood actors, and rock stars, and offers counterterrorism training to the United States military, to local and state police departments, and to various SWAT units around the country. He lives in Los Angeles.