G. F. Hellstern is a professional in the Aerospace Industry where he builds future concepts for air and space platforms. He has served in the Air Force and enjoys writing and think...lihat lebih banyakG. F. Hellstern is a professional in the Aerospace Industry where he builds future concepts for air and space platforms. He has served in the Air Force and enjoys writing and thinking up new ideas through fiction.lihat lebih sedikit