CPT Robert N. Trapnell, airborne systems engineering action officer, of the Air Weather Service Headquarters explains the operation of a dropsonde. The captain directs the operational test and evaluation of new dropsondes and other airborne weather reconnaissance equipment. Base: Scott Air Force Base State: Illinois (IL) Country: United States Of America (USA)

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Size: 2830px × 1890px
Photo credit: © NB/ROD / Alamy / Afripics
License: Licensed
Model Released: No

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