number of nuclear devices scheduled for early production for the defense stockpile or those important to the design of improved weapons. The DOD used the series to continue its study of military weapons effects and, with Exercises Desert Rock VII and VIII, its training of personnel in nuclear operations (18: 34). 4.14.2 PLUMBBOB Test Operations. About 13,300 DOD personnel participated in observer programs, tactical maneuvers, and scientific and diagnostic studies during Operation PLUMBBOB. Exercises Desert Rock VII and VIII, consisting of training programs, tactical maneuvers, and technical service projects, engaged the largest DOD participation. At Shot HOOD, approximately 2,150 Marines took part in a maneuver involving the use of a helicopter airlift and tactical air support. An estimated 1,144 Army troops (Task Force WARRIOR) participated in an airlift assault at Shot SMOKY, and about 110 Army troops (Task Force BIG BANG) were interviewed at Shot GALILEO to determine their psychological reaction to witnessing a detonation (18: 1,4,5). 4.14.3 Dose Summary for Operation PLUMBBOB. The maximum dose limit for Desert Rock troops was 5.0 rem of gamma radiation in any 6-month period, with no more than 2.0 rem to be from prompt radiation. Participants in activities of the AEC Nevada Test Organization and AFSWC were limited to 3.0 rem for any 13-week period and 5.0 rem for one calendar year (18: 2,3). 118 /2.