Career
She is a four-time Olympian, and a two-time medalist for pistol shooting at the Pan American Games (1991 in Havana, Cuba and 1999 in Winnipeg, Manitoba, Canada). She also worked as a police officer in Washington, District of Columbia for almost three decades, before retiring in 2003. Callahan, born in Columbia, South Carolina, started out her sporting career in 1980, when she learned shooting with the Washington District of Columbia police department.
She captured three more medals (one silver and two bronze) in air and pistol shooting at the 1992, 2001, and 2005 ISSF World Cup series.
Sixteen years after competing in her first Olympics, Callahan qualified for her fourth United States. shooting team at the 2008 Summer Olympics in Beijing, by winning the sport pistol from the United States. Olympic Team Trials in Fort Benning, Georgia. She competed only in the women"s 25 m pistol, where she was able to shoot 287 targets in the precision stage, and 288 in the rapid fire, for a total score of 575 points, finishing only in twenty-fifth place.