Active and Passive Defense.
A chapter in a forthcoming study of civil defense (Professor Eugene Wigner, editor), which will deal primarily with blast shelters--a passive form of defense. Because passive defense cannot be discussed meaningfully without an understanding of its relationship to active defense, i.e., intercepting and destroying the attacking bombers and ballistic missiles, this paper describes the technical aspects of active defense, particularly ballistic missile defense. The authors also discuss the question of which is more effective--active or passive defense, or some combination of the two. 13 pp.