Davis-Monthan Air Force Base declares higher state of security Published Sept. 16, 2011 By 050911 DAVIS-MONTHAN AIR FORCE BASE, Ariz. -- Reports of suspicious activity have caused D-M officials to declare a higher state of security. No shots have been fired and no one has been hurt. Officials are currently investigating the situation, and more information will follow as it becomes available. Any questions should be referred to the Public Affairs office at (520) 228-3406 or (520) 228-3407.