A few nice National Security images I found:

Suzanne Spaulding

Image by Center for American Progress
The Constitution gives Congress broad authority to oversee and investigate the activities of the executive branch. If Congress is to carry out that authority, it must have access to many kinds of government information, including classified or sensitive national security information which government agencies may be reluctant to reveal.

How do Congress and the executive branch strike a proper balance between the congressional need to have such information and the government’s duty to protect it? What options does Congress have when the government refuses to provide the information it requests? When is it appropriate for Congress to make national security information available to the public and the press?

Please join the Center for American Progress and OpenTheGovernment.org for an address by The Honorable Jane Harman (D-CA), Chair of the House Homeland Security Subcommittee on Intelligence, Information-Sharing and Terrorism Risk Assessment and former Ranking Member of the House Permanent Select Committee on Intelligence, who will discuss the importance of national security information to Congress and current efforts by the Administration to resist providing it.

Following Rep. Harman’s remarks, a distinguished panel of experts will examine the means by which Congress obtains and makes use of national security information in performing its oversight and investigative functions.

For more on this event, please see:
www.americanprogress.org/events/2007/03/classified.html

050329-C-3350N-064

Image by Marion Doss
050329-c-3350N-064
PASCAGOULA, Miss. (March 29, 2005)- Meryl Chertoff speaks at a keel-laying ceremony for the Coast Guard’s first national security cutter. The ceremony involved Chertoff, wife of Homeland Security Secretary Michael Chertoff, inscribing her initials on a placard to be displayed aboard the cutter.
The ceremony to authenticate the keel confirms the keel is "truly and fairly laid" for the first ship of this class of highly-capable, technologically-advanced, multi-mission cutters for the Coast Guard and Department of Homeland Security.
Northrop Grumman Corporation is building the ship under a contract from Integrated Coast Guard Systems LLP, a joint venture of Northrop Grumman and Lockheed Martin.
(U.S. Coast Guard photograph by Petty Officer 2nd Class Kyle Niemi)

050329-c-3550N-089

Image by Marion Doss
050329-c-3550N-089
PASCAGOULA, Miss. (March 29, 2005)- Meryl Chertoff, wife of Secretary of Homeland Security Michael Chertoff, initials a placard today that will be displayed aboard the Coast Guard’s first national security cutter being constructed at the Northrop Grumman shipyard here. The ceremony to authenticate the keel confirms the ship’s keel is "truly and fairly laid" for the first ship of this class of highly-capable, technologically-advanced, multi-mission cutters for the Coast Guard and Department of Homeland Security.
Northrop Grumman Corporation is building the ship under a contract from Integrated Coast Guard Systems LLP, a joint venture of Northrop Grumman and Lockheed Martin.
(U.S. Coast Guard photograph by Petty Officer 2nd Class Kyle Niemi)