Awwal 06, 1432, Feb 09, 2011, SPA -- A retired U.S. Customs officer was killed and three others wounded in a suicide bombing earlier this week in southern Afghanistan. In a statement issued in Washington last night, U.S. Secretary of Homeland Security Janet Napolitano said David Hillman, the retired customs officer who was working for the U.S. government for 30 years, died in an explosion on Monday in a customs warehouse in Kandahar.