From the Nikon web site:
Nikon Corporation (Michio Kariya, President) is pleased to announce that the National Aeronautics and Space Administration (NASA) has placed an order for eleven D3S digital SLR cameras and seven AF-S NIKKOR 14-24mm f/2.8G ED lenses to be used for photographic documentation.
Nikon D3S
AF-S NIKKOR 14-24mm f/2.8G ED

The D3S digital SLR cameras and AF-S NIKKOR 14-24mm f/2.8G ED lenses ordered by NASA will be carried on the Space Shuttle and used to photograph activities at the International Space Station (ISS) in the future.