Leslie Coffelt, my Grandfather's cousin, in an exhibit at the Smithsonian American History Museum

The description above his picture reads:
On November 1, 1950, two Puerto Rican nationalists attempted to assassinate President Harry S. Truman. During an exchange of gunfire, Officer Leslie Coffelt of the White House Secret Service police was killed. Because of his actions, and those of the other agents involved, the attack on Truman failed. Courtesy of Department of the Treasury, United States Secret Service.


His picture and the information about his heroic act are part of the exhibit The American Presidency: A Glorious Burden at the Smithsonian National Museum of American History.