Kristi Noem​, Trump's pick to lead the sprawling Department of Homeland Security, took questions from lawmakers on border policies and disaster relief.

Presented by Lockheed Martin —{beacon} Defense &National Security Defense &National Security PRESENTED BY LOCKHEED MARTIN The Big Story Trump on the warpath: First female Coast

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.

In support of President Trump's executive orders, the Coast Guard will send additional resources to maritime borders, the military branch said Tuesday.

A Coast Guard commandant, who oversaw the rescue operation after the Francis Scott Key Bridge collapse, was fired on the second day of the Trump administration, an action Maryland Sen. Chris Van

The U.S. Coast Guard said Tuesday night that it will be surging ships, boats and aircraft to South Florida and other areas of the country to bolster anti-maritime migration efforts to comply with President Donald Trump’s executive order to use the nation’s military to defend the border.

Trump supporters love her. But the South Dakota governor will likely be asked about family separation at the border - and the dog she says she shot.

South Dakota Governor Kristi Noem, nominee for Secretary of Homeland Security, vowed to overhaul FEMA's disaster response times, enforce stricter in-office policies and eliminate political bias in relief efforts during her confirmation hearing.

The department that the South Dakota governor seeks to lead will be critical to fulfilling the incoming administration’s promises to quickly crack down on immigration.

If confirmed, Noem would lead the department poised to be at the center of Trump's immigration policy priorities, including any deportation efforts, visa changes and border security.

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