The president has directed the U.S. military to reinforce the border, and the acting secretary of defense on Wednesday announced the Pentagon is sending around 1,500 active duty troops to the country’s southern border, joining 2,500 active duty personnel already there.

The U.S. military's mission on the border is moving quickly as the White House and the Pentagon are making it a priority to publicize news about the mission.

The U.S. Pentagon is sending an additional 1,500 active-duty troops to the southern border by the end of the week, a senior U.S. military official told Fox News.

The Senate on Thursday voted to advance Pete Hegseth's nomination to be President Donald Trump's defense secretary, putting him on a path to final confirmation at the end of the week.

A U.S. Border Patrol agent killed during a traffic stop near the Canadian border worked security duty at the Pentagon during the time of the Sept. 11 attacks.

The Pentagon also will provide military aircraft ... Those flights will involve four Air Force aircraft based in San Diego an El Paso, along with crews and maintenance personnel.

WASHINGTON (AP) — The Senate is muscling Pete Hegseth’s nomination as defense secretary toward confirmation Friday, prioritizing his vow to create a “warrior culture” at the Pentagon over allegations of heavy drinking and aggressive behavior toward women.

The Pentagon will begin deploying as many as 1,500 ... Get top local stories in San Diego delivered to you every morning. Sign up for NBC San Diego's News Headlines newsletter.

The first such military flight out of El Paso, Texas, took place, bound for Guatemala with approximately 80 immigrants on board.

WASHINGTON (AP) — The Pentagon said Wednesday it has begun deploying 1,500 active duty troops to help secure the southern border, putting in motion plans President Donald Trump laid out in executive orders shortly after he took office to crack down on immigration.

The I Marine Expeditionary Force is made up of about 53,000 active-duty troops, who are primarily stationed at Camp Pendleton, as well as at Marine Corps Air Stations Miramar and Yuma, and the Marine Corps Air/Ground Combat Center at 29 Palms, California.