FORT IRWIN, CA, UNITED STATES 01.23.2019 - An Armored Vehicle-Launched Bridge from the 391st Mobile Augmentation Company (MAC), Boise, Idaho, extends out over a tank berm, normally used to obstruct maneuver elements, to provide ease of access to the objective on the other side, during a rotation at the National Training Center (NTC), Fort Irwin, California, January 23, 2019. The 391st took part in the third rotation of NTC for 2019, a training exercise that occurs 11 times per year over the course of 14 days (U.S. Army photo by Sgt. 1st Class Jason Proseus/416th Theater Engineer Command).