Police officers arrive at an interfaith memorial service, honoring five slain police officers, at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas. (credit: Tom Pennington/Getty Images)
Dallas Police Memorial
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Morton H. Meyerson Symphony Center
(credit: CBSDFW.COM)
American Flag
(credit: CBSDFW.COM)
Obama heads to Dallas
President Barack Obama and First Lady Michelle Obama make their way to board Air Force One before departing for Dallas, Texas from Andrews Air Force Base. (credit: Mandel Ngan/AFP/Getty Images)
Dallas Police Memorial
Vice President Joe Biden, Jill Biden and former President George W. Bush and former First Lady Laura Bush attend an interfaith memorial service for the victims of the Dallas police shooting at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: MANDEL NGAN/AFP/Getty Images)
Dallas Police Memorial - President Barack Obama
President Barack Obama speaks during an interfaith memorial service for the victims of the Dallas police shooting at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: MANDEL NGAN/AFP/Getty Images)
Dallas Police Memorial
Former First Lady Laura Bush, former President George W. Bush and President Barack Obama and First Lady Michelle Obama attend an interfaith memorial service for the victims of the Dallas police shooting at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: MANDEL NGAN/AFP/Getty Images)
US-CRIME-POLICE-SHOOTING-OBAMA
Dallas Police Chief David Brown and Dallas Area Rapid Transit Police Chief James Spiller attend an interfaith memorial service for the victims of the Dallas police shooting at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: MANDEL NGAN/AFP/Getty Images)
Dallas Police Memorial - President Barack Obama
President Barack Obama delivers remarks during an interfaith memorial service, honoring five slain police officers, at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: Tom Pennington/Getty Images)
Dallas Police Memorial
DART officer Misty McBride hugs a fellow officer before an interfaith memorial service, honoring five slain police officers, at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: Tom Pennington/Getty Images)
US-CRIME-POLICE-SHOOTING-OBAMA
President Barack Obama speaks during an interfaith memorial service for the victims of the Dallas police shooting at the Morton H. Meyerson Symphony Center on July 12, 2016 in Dallas, Texas. (credit: MANDEL NGAN/AFP/Getty Images)
