File:AF Presidential Unit Citation Ribbon.png

Summary
The Presidential Unit Citation, originally called the Distinguished Unit Citation, awarded to units of the Armed Forces of the United States and allies for extraordinary heroism in action against an armed enemy on or after 7 December 1941 (the date of the Attack on Pearl Harbor and the start of American involvement in World War II). This image can also be found on Wikipedia at https://en.wikipedia.org/wiki/File:AF_Presidential_Unit_Citation_Ribbon.png.