i ABSTRACT This report contains a description of the mission, organization, and activities of Task Unit 7, Task Group 7.1, Joint Task Force SEVEN, during Operation Redwing. Task Unit 7 was charged with the responsibility of providing radiological-safety support for the Scientific Task Group, TG 7.1. The various chapters are devored to a discussion of the activities engaged in by the Task Unit and the organization necessary to provide adequate radiological-safety support for a weapons-test operation of the magnitude of Operation Redwing. Radiologicaleurvey results of the atolls following firing of the various devices are presented. Special problems arising during the operation are discussed. F007581081