Member of the US. Secret Service bomb team pack up their truck following their response to a suspicious package after it was tossed over the fence onto the White House grounds in Washington March 22, 2006. A man was taken into custody after throwing a suspicious package over the White House fence on Wednesday but no explosives were found, the Secret Service said. [REUTERS]

A U.S. Secret Service officer closes Pennsylvania Avenue following a response to a suspicious package after it was tossed over the fence onto the White House grounds in Washington March 22, 2006. A man was taken into custody after throwing a suspicious package over the White House fence on Wednesday but no explosives were found, the Secret Service said. [REUTERS]