Today's aircraft push engineering knowledge and piloting skills from the impossible to the possible. From drone pilots on the ground to pilots in space, and from aircraft with no engines to those that run on alternate forms of power, this series introduces readers to a wide variety of planes, helicopters, and drones. Dynamic, full-color images bring the world of aviation into their hands. Aligned to Common Core Standards and correlated to state standards. A&D Xtreme is an imprint of Abdo Publishing, a division of ABDO.