In the Season 10 finale, McGee began dating Delilah Fielding (Margo Harshman), a Department of Defense "cryptologist in a dark office". In season 11, the team meets her while investigating a case. In the Season 11 episodes "Kill Chain" and "Double Back", Delilah is left badly injured in a missile attack at a black-tie event she and McGee are attending. While McGee is not seriously injured, Delilah is left permanently paralyzed due to shrapnel embedded in her spine, and she thereafter uses a wheelchair; McGee struggles to cope with the thought of her being injured. She soon recovers from the incident and continues to assist the NCIS team. In the episode "Page Not Found", McGee confides in Tony that he is planning to ask Delilah to move in with him; Delilah later reveals to Tony that she wants to take a job opening for a senior intelligence analyst, which would require her to move to Dubai for a year. Tony then separately tells the two about their other half's plans; McGee encourages her to take the job and they agree to continue their relationship long-distance. McGee also gives her a copy of his house key, which she accepts, reiterating her intent to move in with him after her assignment is over.