Shanahan Briefing Deputy Defense Secretary Patrick M. Shanahan briefs the media at the Pentagon, Dec. 21, 2017. DoD photo by Navy Petty Officer 1st Class Kathryn E. Holm SHARE IMAGE: Download Image: Full Size (1.33 MB) Tags: Briefings, Patrick M. Shanahan, DepSecDef Photo By: Petty Officer 1st Class Kathryn E. Holm VIRIN: 171221-D-SH953-0085.JPG Photo Gallery