His silence is completely understandable. The United States of America is involved with at least two wars, one as an ally and the other as munition procurement.
Defense Secretary Austin loves this country and protects it with his life, including allowing any enemy of this country feeling empowered by perceived weakness. Defense Secretary Austin stood under his own power to tell the nation of his diagnosis. He is still on the job.
A grateful nation wishes him all the empowerment available to see him and his family through a difficult time. I am looking forward to more of his leadership. He has and will continue to protect us everyday.