English SCHRIEVER SPACE FORCE BASE, Colo. --Dr. BradfordParkinson, retired U.S. determination method: work of the federal government of the United States
English SCHRIEVER SPACE FORCE BASE, Colo. --Dr. BradfordParkinson, retired U.S. determination method: work of the federal government of the United States
English SCHRIEVER SPACE FORCE BASE, Colo. --Dr. BradfordParkinson, retired U.S. determination method: work of the federal government of the United States
English SCHRIEVER SPACE FORCE BASE, Colo. --Dr. BradfordParkinson, retired U.S. determination method: work of the federal government of the United States