Describes the variety of activities, organizations, and experiences available to the ham radio operator. Includes a brief history of radio and explains how radios work.
Discusses various forms of protective defenses used by animals, with an emphasis on camouflage phenomena such as disruptive coloration and countershading.
Presents a history of the United States Air Force with information on its organization, enlistment and benefits, officer training, educational opportunities, and day-to-day life.