This is the C-5 Galaxy

The C-5 Galaxy aircraft is one of the largest aircraft in the world and the largest military transport plane in the United States inventory. Its carrying capabilities, loading/off-loading efficiency, and performance make it an important part of the military airlift fleet. Setting world aviation records, this aircraft is considered the only true strategic airlifter of the U.S. Air Force. This book is intended to introduce children to this special aircraft, but may prove to win over the hearts of adults as well.