Sadie vom Arlington is also known as "Pretty Girl" or "Princess", but this girl is all business — she loves to search and is very serious about completing the job. She shares a personal motto with her handler, Deryl — "essayons", which means let us try. At home she is the Alpha dog and likes to boss her two brothers, Sergeant and Ali. Sadie was only three months old when she started training with MARK-9. Sadie knows she is a pretty girl, but she likes to work hard and doesn't mind getting dirty.

Sadie is from the following litter, registered with the World Wide Kennel Club:
Lady Lexis of Texas x Duke Lord of Buckingham