Complex sentence: In April 2016, the appearance of the ribbon was slightly modified by the United States Department of Defense's Defense Logistics Agency (DLA), which made the two green bars in the middle wider than in the original 1991 version.
Split into simpler sentences: In April 2016, the appearance of the ribbon was slightly modified by the United States Department of Defense through its Defense Logistics Agency (DLA). The DLA made the two green bars in the middle wider than in the original 1991 version.