Dr. Carla Hayden, director of the Enoch Pratt Free Library in Baltimore, received President Obama's nomination for Librarian of Congress in February. If approved, Hayden would become the first woman and the first African American to hold the position. (Photo courtesy of the American Library Association)
Redonda Miller, M.D., M.B.A., was named president of Johns Hopkins University in May. She's the first woman to lead the hospital in its 125-year history. Miller will assume her role July 1. (Photo courtesy of Johns Hopkins University)
Major General Linda L. Singh is the first woman to serve as the Adjutant General of the Maryland National Guard. A Maryland native, Singh oversees the daily operations of the Maryland Military Department. (Photo courtesy of the Maryland National Guard)
In July, Alanna W. Shanahan will step into her role as Johns Hopkins University's first woman athletic director after working as a sports administrator at the University of Pennsylvania. (Photo courtesy of Johns Hopkins University)
Twana Allen is the first African American to serve as fire lieutenant in Baltimore County. She officially took on the new role in September 2015. (Photo courtesy of Baltimore County Government)
Dr. Leigh Ann Curl is the first woman to be named head team orthopedic surgeon in the NFL. She performs more than 500 surgeries a year, and also works with the Baltimore Orioles.