1st United States Civil Service Region, Board of United States Civil Service Examiners, U.S. Navy Underwater Sound Laboratory, Fort Trumbull, New London, Conn., and Air Force Command and Control Development Division, L. G. Hanscom Field, Bedford, Mass., electronic scientist, electronic engineer, physicist, GS-5-GS-14 ($5,335 to $12,210 per annum), amendment 3 to ann. no. 1-7-1 (56), and supplements.