Player Embed Code: <iframe width='500' height='300' scrolling='no' frameborder='0' style='border: none; overflow: hidden; width: 500px; height: 300px;' allowtransparency='true' src='https://www.dvidshub.net/video/embed/712842'></iframe> Download Embed Share Vigilant Guard 19-4 recap Ohio National Guard Public Affairs Aug. 10, 2019 | 3:12 Vigilant Guard 2019 was the largest disaster response exercise in the state of Ohio’s history. The exercise, held Aug. 5-8, 2019, was hosted locally by the Ohio National Guard and Ohio Emergency Management Agency and sponsored by U.S. Northern Command (NORTHCOM) in conjunction with the National Guard Bureau.