‘me ACKNOWLEDGMENTS The author wishes to acknowledge the assistance of the many federal, state, and municipal civil defense officials who contributed valuable data to this appendix. Their assistance does not, of course, imply their endorsement of the conclusions or recommendations. In addition the author wishes to thank Miss Jane Ingersoll, Mr. Bertram Lindman, Miss Peggy Simmons, and membersof the review board: Mr. Marshall Andrews, Lt Col R. B. Crayton, Dr. John H. Gardner, Big Gen John G. Hill, RAdm Marion N. Little, Lt Col O. Q. Matteson, Dr. Thornton L. Page, Dr. Marcel Vigneras, and Col William Withers.