Chief Warrant Officer 3 Eric Brooker, 841st Transportation Battalion DDST chief mobility warrant officer, monitors vehicles as they board the M/V Liberty Passion at Naval Weapons Station, Joint Base Charleston in Support of DEFENDER-Europe 20 March 10, 2020. Exercises like this ensure the U.S. military will be able to dynamically project force to set the theater by mobilizing and deploying forces, sustaining them in a crisis and redeploying them when their mission is complete.