The U.S. has commissioned an squadron of General Atomics' MQ-9 Reaper drones like the one above, shown at Creech Air Force Base. The Reaper will do more than surveillance, carrying up to 14 satellite-guided Hellfire missiles that can cause some serious damage. Click for a super-high resolution version of the Reaper showing all its naughty bits.
These babies are about two times as fast as their Predator predecessor, thanks mostly to its new and improved 900-hp turbo-prop engine. They are scheduled to be deployed between this fall and early next spring.
As a bonus, here is a video of a similar beast, the Northrop Grumman RQ-4 Block 20 Global Hawk.