Attendees place their hands over their hearts during the playing of the US national anthem prior to a candlelight vigil at the Oklahoma City National Memorial in memory of the 168 victims killed in 1995 as a result of the bombing of the Alfred P. Murrah Federal Building 17 April, 2005 in Oklahoma City, Oklahoma. The 10th anniversary of the bombing falls on 19 April. (Win McNamee/Getty Images/AFP) FOR NEWSPAPER AND TV USE ONLY (Photo by WIN MCNAMEE / Getty Images North America / Getty Images via AFP)(WIN MCNAMEE)