Qaeda. terrorist operations are considered a very serious potential threat in the case of yemen. the most serious al qaeda threat to the united states. and it is no secret that since the war in afghanistan began, the united states has been slowly, steadily, and more rapidly just recently, building up its drone force. unmanned aerial planes that essentially are arm. that can take, hover over a target for a day or longer. and take out the targets without putting pilots at risk. it has been a very effective weapon. certainly in pakistan. taking out al qaeda targets. those kinds of drones have bee...