The urgent truth about the privatization of America’s national security that exposes where this industry came from, how it operates, where it's heading—and why we should be concerned.Thirty years ago there were no private military and security companies (PMSCs); there were only mercenaries. Now the PMSCs are a bona-fide industry, an indispensable part of American foreign and military policy. PMSCs assist US forces in combat operations and replace them after the military withdraws from combat zones; they guard our embassies; they play key roles in US counterterrorism strategies; and Homeland Security depends on them. Their services include maritime security, police training, drone operations, cyber security, and intelligence analysis (as Edward Snowden has famously revealed).