Boeing unmanned Phatom Ray
http://boeing.pb.feedroom.com/pb-comp/boeing/custom1/player.swf?Environment=&SiteID=boeing&SiteName=Boeing&SkinName=custom1&ChannelID=f172ba8e1bc611ca29d00c7cc5932d7b490b9c4b&StoryID=74bc46b15eade6e0429f21feddbd888c5b8b75c5&Volume=.5
Undetectable by radar and minimal heat signature output. Crazy!