Are Your Assets Secure?

With the recent security breach at a State Dinner I wonder how secure our assets are when the Secret Service, has a major human failure.  When two interlopers can breach a secure area, passing two seperate human security agents and reach the President of the United States at a State function it is time to rethink our security processes. Is your organization secure?  Do you have adequate access control measures?  Are your assest mission critical?  Are visitors challenged appropriately to ensure they have proper credentials and and are on official business? Do you have a reactive or proactive security in place? Are false alrms a significan problem?