Former UFC Fighter Tim Kennedy said he reenlisted in the U.S. Army Special Forces after seeing the change in military leadership from President Obama to President Trump.

Kennedy praised Secretary of Defense Gen. James Mattis and National Security Adviser H.R. McMaster for their leadership throughout Trump's term.

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On "Fox & Friends Weekend," Kennedy also complimented the president for allowing the military to make its own decisions on-the-ground.

Dear isis, If you are lucky enough to kill a Special Forces operator, the possibility of us dropping the biggest non-nuclear bomb ever made on you should be the least of your concerns. There is a vengeance and wrath associated with the loss of one of our brothers. May God have mercy on your soul because we are coming and we will have none to give. Sincerely, The U.S. Military A post shared by Tim Kennedy (@timkennedymma) on Apr 14, 2017 at 12:34pm PDT

Kennedy said the detonation of "the mother of all bombs" ordnance in Afghanistan showed that the military "got our teeth back" with Trump as its commander-in-chief.

He said he felt "reinvigorated" by the drastic change from the last eight years, and reenlisted in the armed services.

"I've got people that will back me now," he said.

Pete Hegseth recalled how earlier in the war against ISIS, Kennedy posted his home address for the terrorists to see, inviting the "cowards" to come knocking.

Kennedy confirmed the incident and explained how the group must be eliminated by force.

"We can stand together and fight [them]," he said.

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