WASHINGTON — Department of Homeland Security (DHS) Secretary Janet Napolitano today announced the expansion of the Department's national “If You See Something, Say Something” campaign to hundreds of Walmart stores across the country—launching a new partnership between DHS and Walmart to help the American public play an active role in ensuring the safety and security of our nation. http://www.youtube.com/watch?v=ntCYiegLcxw added by: im1mjrpain