An Air Force base in Arizona has been placed on lockdown after “unconfirmed reports” of gunshots https://t.co/IsJR8PfiPy pic.twitter.com/qMw1x4NWbZ

— New York Post (@nypost) January 23, 2017

Air Force says Davis-Monthan Air Force base is on lockdown after unconfirmed reports of gunshot sounds: https://t.co/9x3WJpo3kj

— Stars and Stripes (@starsandstripes) January 23, 2017