Player Embed Code: Download Embed Share 278th Change of Command Ceremony Tennessee National Guard Joint Public Affairs Office Feb. 3, 2019 | 1:19 278th Armored Cavalry Regiment Change of Command Ceremony took place at West High school, Knoxville Tennessee. Col. Jimmie L. Cole relinquished his command over the 278th ACR to Lieutenant Colonel John Bowlin. Lt. Col. Bowlin is now the 14th Commander of the 278th ACR.