On the 50th anniversary of the Bay of Pigs invasion in 2011, the National Security Archive's Cuba project director, Peter Kornbluh, requested,
through the FOIA, the complete release of "The Official History of the Bay of Pigs Operation" — a massive, five-volume study compiled by a CIA staff
historian, Jack Pfeiffer, in the 1970s and early 1980s. Volume III had already been released under the Kennedy Assassination Records Act; and a censored
version of Volume IV had been declassified years earlier pursuant to a request by Pfeiffer himself.
The Archive's FOIA request pried loose Volumes I and II of the draft history, along with a less-redacted version of Volume IV, but the CIA refused to
release Volume V, so the Archive filed suit under FOIA in 2012, represented by the expert FOIA litigator, David Sobel. In May 2012, U.S. District Judge
Gladys Kessler held that Volume V was covered by the deliberative process privilege, and refused to order any segregation of "non-deliberative" material,
as required by FOIA.