D-M to hold operational readiness exercise Published March 11, 2013 By 020313 DAVIS-MONTHAN AIR FORCE BASE, Ariz. -- Davis-Monthan AFB will be conducting a routine operational readiness exercise from March 11-14. Please be advised there will be increased activity on the base both during the day and night throughout the four day period. These exercises are held to ensure D-M's Airmen maintain the highest levels of proficiency and readiness for worldwide military and humanitarian operations. During the exercise period, alarms, sirens and loudspeaker announcements may be heard at residences on and near the base. For additional information please contact the 355th Fighter Wing Public Affairs Office at 228-3406, or for noise concerns please call 228-5091.