</s>104-10110-10621 2025 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992 SECRET DAVID L. CHRIST Chief of TSD/Audio Operations Branch writing of the following: All audio operations world-wide since December 1957 to present date. Complete knowledge of all R&D aspects of audio equipment research. Had knowledge of certain Staff D and F1 equipment and operations. Complete knowledgeof all audio assets in production and stocked for use overseas. Clearances through Top Secret, Special Intelligence clearance, and "Q" clearance. World-wide knowledge of the location of all our audio technicians. Having previously been with the Applied Physics Branch of TDSD, he was also aware of many of our other R&d activities. As Branch Chief in TSD, he has full information on all personnel in TSD and g general knowledge of of the overall activities, including the research programs. He has been to isolation many times. SECRET

Summary: This document details the responsibilities and clearance levels of David L. Christ, Chief of TSD/Audio Operations Branch, under the JFK Assassination Records Act of 1992. It outlines his oversight of global audio operations from December 1957 to the present, including research and development of audio equipment, knowledge of Staff D and F1 systems, management of audio assets in production and overseas stockpiles, and possession of Top Secret, Special Intelligence, and "Q" clearances. Christ had comprehensive awareness of technician locations worldwide, prior experience with the Applied Physics Branch of TDSD, access to TSD personnel records, and familiarity with general research programs. The text notes his frequent visits to isolation facilities.  

Key People: David L. Christ  
Key Locations: Global locations of audio technicians (specific sites not detailed)  
Key Events: Oversight of audio operations since 1957, management of equipment and assets, clearance maintenance, prior role in Applied Physics Branch, visits to isolation facilities  
Key Organizations: TSD/Audio Operations Branch, Applied Physics Branch, TDSD

JFK Declassified Files

104-10110-10621.pdf

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