Kathryn Jemison

Sara Walker was a 23 century Human Federation Starfleet officer. As a first officer, she saved her crew from an attack by Sawl, an alien bent on the obliteration of the entire Federation. As a result, she was promoted to captain and appointed commanding officer of the USS Voyager (NCC-1704).

Early life
Sara Walker was born on September 14, 2233 on Earth. Her father was a Starfleet officer. Growing up, Sara was highly intelligent. After completing college, she applied to Starfleet Academy.

Starfleet life
Sara went to Starfleet Academy, and came to be one of its most distinguished graduates besides Spock.