You might want to read this article before you pitch your next story containing potentially "classified" information or dealing with matters of national security.
How top editors decide whether to publish national security stories based on classified information
By Rachel Smolkin Rachel Smolkin (email@example.com) is AJR's managing editor.
"In interviews with AJR, top editors at the newspapers involved in recent high-profile skirmishes, as well as other authorities on national security reporting, explained how stories based on classified information are reported and how editors decide whether to publish in the face of administration objections. (AJR also requested interviews with Cheney and White House Press Secretary Tony Snow; both declined.) "
Source: American Journalism Review--ajr.org