President Donald Trump has moved quickly to remake the Department of Homeland Security by firing the heads of the Transportation Security Administration and Coast Guard before their terms are up while eliminating all the members of a key aviation security advisory group.

Homeland Security officials have removed Adm. Linda Fagan from her role as the Coast Guard’s commandant, according to a note sent to service members — the first firing of a top military officer under the Trump administration.

He began by dismissing four people: retired Gen. Mark Milley from the National Infrastructure Advisory Council; celebrity chef José Andrés from the President’s Council on Sports, Fitness and Nutrition; Brian Hook from the Wilson Center for Scholars; and Keisha Lance Bottoms, former mayor of Atlanta, from the President’s Export Council.

The Trump administration ousted Coast Guard Commandant Linda Fagan, who is the first woman to lead a branch of the U.S. military.

Donald Trump has fired the head of the US Coast Guard for excessively focusing on diversity policies instead of border security. In one of his first acts after retaking the White House on Monday, Trump said his team was in the process of "identifying and removing" as many as 1,

U.S. Coast Guard Commandant Admiral Linda Fagan testifies during a House Homeland Security Transportation and Maritime Security Subcommittee hearing on Capitol Hill in Washington, U.S., July 14, 2022.

Fox News chief national security correspondent Jennifer Griffin reports on President Trump’s decision to remove the Coast Guard commandant on ‘The Faulkner Focus.’

The Trump administration has fired U.S. Coast Guard Commandant Admiral Linda Lee Fagan, the first female uniformed leader of an Armed Forces branch, for putting diversity issues over border security,