(AP)
President Barack Obama and Vice President Joe Biden have arrived at the memorial service for the five officers who were shot and killed last week in Dallas.
Obama, Michelle Obama, Biden, Jill Biden and several members of Congress, including Texas Republican Sens. Ted Cruz and John Cornyn, flew to Dallas on Tuesday. The Obamas, Bidens and former President George W. Bush and his wife, Laura, are seated on stage.
Obama, Cornyn and Bush are all slated to speak at the service, where five seats have been kept empty to honor the five who died during a protest against the police killings of black men in Louisiana and Minnesota. Nine officers and two civilians were injured in the attack.
