The CIA Memorial Wall is a silent memorial to those CIA employees “who gave their lives in the service of their country.”

The"Book of Honor" lists the names of CIA employees who died while serving their country. Some of the names must remain secret, even in death; each of these officers is remembered in the book by a star.

In 2018 there were 129 stars on the Memorial wall. Of the 129 entries in the book, 91 contain names, while 38 do not. These 38 are represented in the book only by a gold star followed by a blank space.

https://www.businessinsider.com/how-china-found-cia-spies-leak-2018-8