HEADQUARTERS, Joint Task Force SEVEN Washington 25, D. C. 10 November 1953 Appendix I to Annex K Hostile Action Alert Plan, CUTF SEVEN Operation Plan No. 3-53 CONTROL OF ELECTRONIC RADIATION AND SURFACE LIGHTING 1. This appendix provides procedures for the curtailment of non-essential radio, electronic and lighting services on ENIWETOK ATOLL. Assumptions a. Enemy forces will rely primarily on celestial and/or radar means for navigation but electronic emissions and surface lighting could be used to increase the accuracy of attack. b. The extent of control of electronics emissions will be such as to satisfy the following conditions: (1) Degree of protection to be gained must be greater than the cost of controls. (2) Controls will be imposed on all types of non-essential emis- sions. c. The importance of blackout, dimout and camouflage has been reduced by the developments in electronics devices and bombing techniques so that total blackout is no longer justified. d. The geographical and meteorological characteristics of the island positions tend to nullify the effects of electronic and surface lighting deception. 3. Concept_of Control a. Upon announcement of the following conditions by ATCOM ENIWETOK, all task group commanders will: (1) WHITE ALERT (a) Lighting: After outbreak of general hostilities, place into effect dimout conditions based upon the following criteria: 1. Lighting needed for maximum productive and operational efficiency should be retained. 2. Lights exposed to the sky or seaward and capable of creating skyglow or of silhouetting vessels should be dimmed seventy five (75) percent. 3. Street and other exterior lighting should be extinguished, reduced or shielded to the minimum needed for safety. 4. Blackout curtain will not be required other than to meet the requirements outlined in the foregoing. (b) Electronic Services: Normal wartime controls. (c) Maritime Navigational Aids (other than electronic): determined by CINCPACFLT and CCGDFOURTEEN, K-I-l2 As