In his second successful behind-the-scenes report (the first being Count Down, 1960, 625, J-239), Shelton presents a detailed account of the on and off duty lives of the astronauts. With a sense for the dramatic and a devotion to accuracy, Shelton describes four of the Project Mercury manned flights. As vapor rises from Shepard's rocket and sand stings the faces of the onlookers, the reader seems to stand close by with the reporters as Alan Shepard walks awkwardly in his bulky space suit to his ship. Shelton also presents excellent accounts of a trip through the spacecraft factory, the nature of the astronauts spacesuits, and perhaps most important, an unhysterical account of the Russian-American space race. Young boys will find this report interesting and highly informative.