There were 3 areas of particular interest.
People interviewed by Fitzgerald include:
former CIA director George J. Tenet and deputy director John E. McLaughlin, former CIA spokesman Bill Harlow, State Department officials, and even a stranger who approached columnist Robert D. Novak on the street.
The "stranger" is a strange story which just shows Washington is a small town.
...the grand jury -- acting on a tip from Wilson -- has questioned a person who approached Novak on Pennsylvania Avenue on July 8, 2003, six days before his column appeared in The Post and other publications
Novak told the person that Wilson's wife worked for the CIA as a specialist in weapons of mass destruction and had arranged her husband's trip to Niger, Wilson said. Unknown to Novak, the person was a friend of Wilson and reported the conversation to him, Wilson said.
The other point of interest involves Judith Miller and it appears Fitzgerald sees her as key to the investigation and wants testimony on her conversations with a specific, though un-named, Bush administration official between July 6 and July 13, 2003.
Finally in regard to the State Dept memo and the Air Force One flight that I've covered a great deal here..... Pincus revealed that Carl Ford Jr. appeared before the Grand Jury. In a previous post I alluded to one of 3 State Dept officials (Carl Ford, Larry Wilkerson, Marc Grossman) as the likely "former administraion official" reported to have seen Ari Fleisher reading the critical memo on AF1. Perhaps it was Ford but I doubt he was aboard AF1. Ford was asked to prepare the memo and then had it transmitted to Powell " via the White House operations center." If Ford were travelling with Powell this transmission it seems would not have been necessary. He would have just hand delivered it. Also as Assistant Secetary for Intelligence and Research he probably was called to testify on intelligence issues. It would appear Ford is not the likely "former administraion official". That leaves Wilkerson and Grossman ( and possibly Powell).
And I still believe Miller's source was Bolton.
This story is coming out now in drips and drabs and Pincus has been doing some fine investigative journalism.