You can use the FDLP eXchange to offer materials you are withdrawing from your depository collection nationally to other libraries. You can do this even if your library does not use the eXchange for its regional withdrawal process - you would just put the material on eXchange after it has been offered to the regional and within your state/region.
Keep in mind when offering too that GPO has a Needs List (for digitization).
Homeland Security Digital Library
Federal depository libraries can sign up for free access to the full content of this valuable resource containing non-classified policy and national strategy documents and specialized resources related to homeland security.
Training exercise at Pea Island, North Carolina, c. 1942. From the U.S. Coast Guard Historian's Office photo collection.
Time to Talk
One of the great strengths of the FDLP is the network of enthusiastic, dedicated professionals who work in its libraries - so make use of that network! Take some time this month to talk to your regional depository coordinator, and to at least one other selective depository coordinator nearby. Make some new friends, learn some new things, get inspiration from what others are doing.
You can find all the depository libraries in your state or any state or territory using the Federal Depository Library Directory.
Department of Homeland Security 
This is one of the newer departments in the Federal government, having begun operations on January 24, 2003. It brought together a variety of agencies, from the Secret Service and the U.S. Coast Guard to U.S. Citizenship and Immigration Services, U.S. Customs and Border Protection, FEMA, and the Transportation Security Administration.
From the U.S. Government Manual: "The Department of Homeland Security prevents terrorism and enhances security, secures and manages the Nation’s borders, enforces and administers its immigration laws, safeguards and secures cyberspace, and ensures resilience to disasters."
The "What We're Saying" Twitter page from DHS brings together tweets from official DHS accounts.
May 6, 1937: Hindenburg disaster. Read the discussion in Congress on 5/14/1937 about hydrogen vs. helium for aviation.
May 11, 1893: dancer Martha Graham was born
May 12, 2016: The National Bison Legacy Act established the bison as the national mammal of the U.S.
May 14, 1804: Lewis & Clark expedition departed St. Louis
Federal Depository Library Program (FDLP)
732 North Capitol Street, NW • Washington, DC 20401