Complex sentence: In December 1951, President Truman, described as being "deeply moved," decorated Mroz and Floyd Boring, described as "two straight-shooting secret service agents," with silver lapel buttons for their roles in preventing his assassination.
Split into simpler sentences: In December 1951, President Truman, described as being "deeply moved," decorated Mroz and Floyd Boring. He said they were "two straight-shooting secret service agents" and gave them silver lapel buttons for their roles in preventing his assassination.