Mama series, Marco, his sisters and his classmates go airborne in the U.S. Air Force KC-135R aerial refueling tanker, as part of a field trip with his class. The students and teachers hear a pre-mission briefing, watch what each crew member does to get the flying gas station into the sky, and witness an aerial refueling with stealth fighter jets. Includes an origami airplane (referenced in story) activity designed by author's son Kiyoshi who inspired this book series, so readers can enjoy a classic Japanese paper craft.