Two MH-139A Grey Wolf helicopters completed their first operational mission Jan. 8, escorting a Minuteman III ...
The MH-139 replaces variants of the UH-1 Huey helicopter, which have flown the ICBM security mission for over 50 years.
VH-3D helicopter, bureau number 159351, officially welcomed to the United States Secret Service James J. Rowley Training ...
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