Kayla and her sister Tessa are the grandchildren of George Hammond.
Tessa is one of George Hammond's granddaughters. She has a younger sister, Kayla, and at the time Gen. Hammond was stationed at Cheyenne Mountain, she lived in Colorado Springs, Colorado.
Hammond is very close to his grandchildren. When the NID tried to blackmail Hammond, the only threat that worked was when they picked up Kayla and Tessa at school and drove them around for a few hours before returning them unharmed. Hammond immediately retired to keep his granddaughters out of danger. Hammond was able to return to duty when O'Neill and Maybourne uncovered Kinsey's involvement in the threats to Hammond's family. Kayla and Tessa had #1 speed dial status on his red telephone, above the President of the United States (6.12 "Unnatural Selection"). Hammond tried to be a part of events in their lives, as work permitted, such as school plays (3.21 "Crystal Skull").
Tessa knew at least one of Hammond's colleagues from work, Col. Jack O'Neill. She and her sister greeted Jack enthusiastically when he visited their grandfather during his temporary forced retirement (4.15 "Chain Reaction").
- 1.19 "Tin Man" (by reference only)
- 3.21 "Crystal Skull" (by reference only)
- 4.15 "Chain Reaction"
- 6.12 "Unnatural Selection" (by reference only)
--Aurora 08:45, 9 January 2006 (PST)