This is all part of the initial haul. They're checking all the documents one by one to make sure they don't reveal information that would make intelligence age

This is all part of the initial haul. They're checking all the documents one by one to make sure they don't reveal information that would make intelligence agents and others at risk. They've partnered with quite a few media organizations to spread the workload. Amusingly enough, you could say that Greenwald et al. are doing the OpSec the NSA should have been doing in the first place. :)