It will merely be a customer of DigitalGlobe - one of many, including the US government.
Not that the US goverment needs DigitalGlobe's images. After all, the NSA has a fleet of its own satellites with far better image resolution capability than the DigitalGlobe effort.
In fact, the US Government relies heavily on DigitalGlobe imagery. After the optical component of the Future Imagery Architecture (FIA) program that should have replaced the aging KH-11 Keyhole/CRYSTAL satelites was scrapped, it left the NRO (the NSA has nothing to do with optical reconaissance) with limited high-res imaging capabilities. For a while they had only 3 operational KH-11 optical reconnaissance satellites left in orbit: two new recent launches have expanded this to 5 recently but one of these is over 17 years old and will likely soon be deorbitted, bringing it down to 4: hardly a "fleet". Lawmakers have been holding off NRO requests for more optical satellites with the argument that it is better to buy time on DigitalGlobe satellites.