Y/N had (and still does) serve in the military from 17 to her current age, she still serves, but nobody knows of this, she is a lieutenant for the Marines Navy Seal's, but she never told anyone. Her military experience was extreme but helped. She enjoyed it, when she gets vacation days, she doesn't stop and take a break, she goes to be a lieutenant for the Navy Seal's, she enjoys. This shows that even with her horrible childhood, she came above it and made it better with life with the Marines, Navy Seal's, and NCIS.