A memorial was held at the Fort Hood Army base Wednesday for victims of last week’s shooting rampage. Three people were killed and 16 wounded when an Iraq War veteran opened fire before taking his own life. The veteran, Ivan Lopez, had sought care for mental health issues, including post-traumatic stress disorder. Addressing the memorial, President Obama honored the victims and pledged to tackle mental health treatment for U.S. servicemembers.

President Obama: “As a father, I cannot begin to fathom your anguish. But I know that you poured your love and your hopes into your sons. I know that the men and soldiers they became, their sense of service and their patriotism, so much of that came from you. As commander-in-chief, I’m determined that we will continue to step up our efforts to reach our troops and veterans who are hurting, to deliver to them the care that they need, and to make sure we never stigmatize those who have the courage to seek help.”

It was Obama’s second appearance at a Fort Hood memorial since taking office, following the killing of 13 people by a U.S. soldier in 2009.