Jessica joined immediately after the PPDC was formed and trained to become a jaeger pilot. Her compatibility with Nick Fury was surprising, and at first she wasn't too keen on the idea. But she warmed up to it fast enough, and Nick came to be her closest friend.
In 2021, Jessica was diagnosed with cancer. That, of course, ended her piloting career, and she took to training (even though her doctors advised against it), becoming one of the most skilled trainers of the LA shatterdome. She misses her role as a pilot, but she likes being a teacher; sometimes she feels it's what's keeping her alive. She's already lived a year longer than expected.