SBIRS GEO 3 (Flight 4) encapsulation
Technicians prepare for the encapsulation of the Air Force's Space Based Infrared System Geosynchronous Earth Orbit Flight-4 (SBIRS GEO-4) satellite at Cape Canaveral Air Force Station, Florida, Jan. 9, 2018. Built by Lockheed Martin, the SBIRS GEO-4 satellite will join three others launched since 2011 to provide early warning of missile launches heading for the United States and its allies. (Photo courtesy Lockheed Martin Space Systems, Colorado)

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Photo by: Jim Dowdall |  VIRIN: 180110-F-ZZ999-103.JPG