Following the massacre of five Dallas police officers and the wounding of seven other officers and two civilians by former Army soldier, Micha Johnson, President Barack Obama cut short his trip to Spain and returned to the U.S. Sunday.

At the invitation of Dallas Mayor Mike Rawlings, the president will travel to Dallas today to deliver remarks at an interfaith memorial service at the Morton H. Meyerson Symphony Center with the families of the fallen police officers and members of the Dallas community whose unity is reflective of who we are as Americans.

He will also meet privately with the families of the fallen police officers and those who were injured to personally express the nation's support and gratitude for their service and sacrifice. Vice President Joe Biden as well as President and Mrs. George W. Bush will also attend. President Bush will deliver brief remarks at the service.

Shortly after hearing of the killings while in Spain, Obama called the incident a “vicious, calculated and despicable attack on law enforcement.”

Immediately after the shootings, the two presidential candidates issued brief statements as did President Bush.

Republican Donald Trump said, "Prayers and condolences to all of the families who are so thoroughly devastated by the horrors we are all watching take place in our country."

He added, “Our nation has become too divided. Too many Americans feel like they've lost hope. Crime is harming too many citizens. Racial tensions have gotten worse, not better. This isn't the American dream we all want for our children."

Democratic candidate Hillary Clinton said, “I mourn for the officers shot while doing their sacred duty to protect peaceful protesters, for their families and all who serve with them.”

President Bush issued a statement and said, "murdering the innocent is always evil, never more so than when the lives taken belong to those who protect our families and communities."