The heads of U.S. Northern and Strategic commands took "maximum precautions" to prevent the suspected Chinese surveillance balloon from collecting intelligence on domestic military sites during its flight over states with sensitive installations -- including key strategic nuclear locations. Gen. Glen VanHerck, head of U.S. Northern Command and North American Aerospace Defense Command, told reporters today that the U.S. military took advantage of the airship’s flight across the continent to conduct counter-intelligence -- securing approval to activate capabilities that typically...