DONALD TRUMP announced on Thursday during his Ohio Victory Rally that he will nominate retired Marine General James ‘Mad Dog’ Mattis to be the 26th secretary of defense.

Donald Trump made the announcement during his rally.

He told the crowd not to let it out of the room.

Donald Trump, Mike Pence and General James “Mad Dog” Mattis

Pres.-elect Trump: “We are going to appoint ‘Mad Dog’ Mattis as our Secretary of Defense” https://t.co/Mzxkm9GuYA https://t.co/lYg8MDjmmM — ABC News (@ABC) December 2, 2016

TRENDING: BREAKING: 'At Least 10 Shots' Reportedly Fired at Police By Louisville Black Lives Matter Rioters — UPDATE... At Least Two Officers Shot (VIDEOS)