Warrior Ethos A new episode of the Na Koa Exchange podcast is out! It is an episode of our Chiefʻs Nine series featuring Warrior Ethos. Tune in to hear a lively discussion about the Warrior Ethos from the Army and Air Force perspectives. Featuring Guests Command Sgt. Maj. Brandon Kumalae, Command Sgt. Maj. of the 29th Infantry Brigade Combat Team and Chief Master Sgt. Anthony D. Hubbard, 297 Air Traffic Control Squadron, Chief of Maintenance/Senior Enlisted Leader.