Doctor Lindsay is a skilled Anthropologist and linguist in the United States Air Force.
She is fluent in Mandarin, Russian, Spanish, three dialects of Goa'uld, Teneeze, Golap, the language of the cave people on P3K-447 and Ancient, both spoken and written. (SG1: "Avalon, Part 1")
Lt. Colonel Cameron Mitchell interviewed her for a position on the new SG-1 before he managed to re-assemble the team, where she demonstrated her ability to speak Ancient. (SG1: "Avalon, Part 1")
A short time later, she was sent to P3X-421 to aid the people. When a Prior arrived on P3X-421, she informed Stargate Command and Lt. Colonel Cameron Mitchell was sent to investigate. (SG1: "Origin")
She later became a member of the Atlantis expedition. She visited M1K-177 escorted by Major Evan Lorne's team where she was helping the local populations with farming methods. When Lorne's team was attacked, he ordered her to head back to the Stargate and report to Atlantis. She then led Lt. Colonel John Sheppard's team to the location of the attack. (SGA: "Coup D'etat")