Mattis Meeting Defense Secretary James N. Mattis meets with the National Security Advisor-designate John R. Bolton at the Pentagon, March 29, 2018. DoD photo by Navy Petty Officer 1st Class Kathryn E. Holm SHARE IMAGE: Download Image: Full Size (1.69 MB) Photo By: Kathryn E. Holm VIRIN: 180329-D-SH953-0097.JPG Photo Gallery