Dawn Velazquez was a command division lieutenant who served aboard the USS Pegasus.
In 2328, prior to her service on the Pegasus, she was a commercial transport passenger traveling from Donatu V Spaceport to Delta IX aboard the SS Wisconsin. Her manifest was accessed by Lieutenant Commander Data aboard the USS Enterprise-D in 2370 by reviewing this data in the commercial transport database. (TNG: "Inheritance", okudagram)
Velazquez was one of seventy-one crewmembers killed during the illegal testing of an experimental phasing cloaking device in 2358.
Twelve years later, Commander William Riker, one of the survivors of the Pegasus, began reminiscing about his former crewmates subsequent to a reunion with Erik Pressman, the Pegasus's former commanding officer, and accessed Velazquez's personnel file. (ENT: "These Are the Voyages...")