The first volume of selected works by the writer - Hero of the Soviet Union, Honored Test Pilot of the USSR, Doctor of Technical Sciences M.L. Gallai's stories include “Through Invisible Barriers”, “Tested in the Sky” and a series of essays “Meetings”. Using expressive literary means, the author talks about the formation of Soviet aviation, shows vivid images of the country's glorious pilots, outstanding designers, and raises moral and ethical problems. The book is intended for the general reader.