From Wikipedia: “The Center for Year 2000 Strategic Stability was a joint operation of the United States and Russian federation designed to provide mutual assurance that neither nation was launching a nuclear first strike against the other during the transition from the year 1999 to the year 2000.” The center was located at Peterson Air Force in Colorado Springs, Colorado and was only operational from December 30, 1999-January 15, 2000.

STA was a defense contractor hired by Headquarters Air Force Space Command to support this project. This was a limited edition mug given to US and Russian crew members and other support personnel.