There have been a lot of flying saucer sightings since 2006. The Navy's X-47B is a tailless, saucer-like stealth unmanned combat air vehicle (UCAV) designed by Northrop Grumman for carrier based operations in—you guessed it—2006.
Actually its first flight wasn't until 2011. If you want the full story, click here. The skinny is that high-subsonic X-47B, with a wingspan of 62 feet, has an unrefueled range of 2,100 nautical and two weapon bays for up to 4,500 LB of ordnance.
Without further ado, here are some pix and a 16-second vid that's worth watching: