National Security Inc.

The intent of the memorial is to publicly honor the courage of those who died in the line of duty, but it also conceals a deeper story about government in the post-9/11 era: Eight of the 22 were not CIA officers at all. They were private contractors.

To ensure that the country's most sensitive duties are carried out only by people loyal above all to the nation's interest, federal rules say contractors may not perform what are called "inherently government functions." But they do, all the time and in every intelligence and counterterrorism agency, according to a two-year investigation by The Washington Post.