Continuity mistake: When Abby is wiping the table at the start, her hand position jumps instantly. (00:04:15)
Continuity mistake: After Senator Kiley asks Gibbs to keep his name out of it until after the vote, it cuts to Ziva holding Carrie McLellan's Academy graduation photo (gold frame looks like an 8x10). In the closeup Ziva places the framed photo back on the shelf, but that photo vanishes from the shelf in following shots. When Gibbs walks in, it seems that photo is on the table beside the couch. (00:07:30)
Visible crew/equipment: While McGee, Ziva, and Tony are in Carrie McLellan's home Ziva reads Carrie's cards, and an orange tape mark is visible on the carpet by her feet. (00:07:35)
Audio problem: When the senator's wife says she will not stand by his side, she takes a drink from her cup but the audio of her talking can still be heard. (00:26:50)
Chosen answer: It is never stated, however she must have been there several years if she is on presidential detail.