Secretary of Defense Mark T. Esper and Chairman of the Joint Chiefs of Staff Army Gen. Mark A. Milley will brief the media at 9:30 a.m. EST in the Pentagon Briefing Room (2D972) on Friday, Dec. 20. Both U.S. and foreign journalists without a Pentagon building pass must be pre-registered in the Pentagon Visitor Management System to attend this briefing; plan on being escorted from the River Entrance Pedestrian Bridge or the Pentagon Metro Entrance Facility only. Please arrive no later than 45 minutes before the briefing; have proof of affiliation and photo identification. Please call 703-697-5131 for any questions and escort into the building. The briefing will also be streamed live on Defense.gov.