Senate Majority Leader Harry Reid (D-Nev.) promoted a top aide, Martina Bradford, to serve as deputy Senate Sergeant-at-Arms, his office announced Tuesday.

Bradford serves as the director of the Senate Democratic Diversity Initiative. Before holding that position, she served was Reid’s senior human resources adviser tasked with ensuring diversity in the workplace. She also practiced law in the private sector for 25 years.

In her new role, Martina will assist Senate Sergeant-at-Arms Terrance Gainer “with the daily operation and security of the U.S. Senate,” according to Reid’s office.

“My office has been fortunate to have the counsel of Martina Bradford over the last three and a half years as she helped implement our diversity initiative, and I am pleased that she will bring her impressive credentials to support the important work at the Sergeant-at-Arms office,” Reid said a statement. “Martina is a seasoned professional, and she will continue to be a great asset to the entire Senate family as she takes on this new role.”
 
Reid’s announcement is the latest in a series of staff shake-ups since the midterm elections. The Majority Leader announced in November that his chief of staff, Gary Myrick, would replace Lula Davis as secretary of the majority for the Democratic caucus next year. Davis is retiring at the end of this year. Reid also elevated Deputy Chief of Staff David Krone to chief of staff and announced Senior Communications Adviser Jim Manley will step down by the end of the year.