Defense Threat Reduction Agency-On Site Europe team members perform a Conventional Armed Forces in Europe exercise inspection of a F-15E Strike Eagle protective aircraft structure at Royal Air Force Lakenheath, England, June 1. The CFE treaty was negotiated during the final years of the Cold War to limit the amount of combat equipment a nation had in their inventory, and provides for an inspection regime to verify holdings. (U.S. Air Force photo/Airman 1st Class Eli Chevalier)