Presidents Bush and Obama
Observe Moment of Silence
At 9/11 Memorial
9/11/2011 5:55 AM PDT BY TMZ STAFF
Former President George W. Bush
, with his wife Laura, and President Barack Obama
, with his wife Michelle, observed a moment of silence at the north pool at the National September 11 Memorial for a ceremony marking the 10th anniversary of the attacks at World Trade Center.