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709th Technical Maintenance Squadron Detachment 421 Primary mission is to maintain and operate a 20- to 22-sensor seismic array buried deep in bedrock to monitor Earth crust vibrations, detect global nuclear detonations, earthquakes, and tsunamis, and support Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) compliance.

709th Technical Maintenance Squadron Detachment 421

Primary mission is to maintain and operate a 20- to 22-sensor seismic array buried deep in bedrock to monitor Earth crust vibrations, detect global nuclear detonations, earthquakes, and tsunamis, and support Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) compliance.

File information
Filename:709tms_det_421.jpg
Album name:RTroutman / USAF 0700-0799
Inscription:U.S. AIR FORCE DETACHMENT 421 ALICE SPRINGS AUSTRALIA
Base:Alice Springs, Australia
Filesize:16 KiB
Date added:Oct 30, 2026
Dimensions:249 x 178 pixels
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URL:http://usmilitarypatches.com/gallery/displayimage.php?pid=82298
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