However, this attitude does not in any way interfere with her quest to put criminals where they belong.She is pretty much universally liked by her co-workers like Tim Speedle who sometimes remark on her being nearly "too happy".While working for the New Orleans Police Department, she gained the nickname "Bullet Girl", a legendary nickname that is well known in the Miami-Dade Crime Lab and other Miami-based LEAs.She also has a deep knowledge of different types of firearms, including the Dx4 "Vaporizer", and Cornershot.She is also noted to be the shortest of the Day Shift CSIs (Emily Procter is 5' 2", or 1,57 m tall).Calleigh is a prime example of "southern hospitality", an almost eternal optimist, with a sunny disposition and a smile to match.
Horatio tries to find a balance between his new life, his growing romance with Calleigh and a madman out for revenge at any cost. Stolen police identities may be used for a terrorist attack.
Calleigh states that her mother wanted to be viewed more as a friend than an authority figure, and wistfully wonders whether a Nanny might have been a voice of reason in the house.
(episode 610, "CSI: My Nanny") Calleigh also appeared in the backdoor pilot "Cross Jurisdictions", where she joked about her name "don't ask me to spell it".
Eric finds the bullet, to which Calleigh says, "You are my hero." After having drinks with Jake, she is involved in a shooting causing her to be questioned by IAB (episode 609, "Stand Your Ground").
Calleigh is exploited on the Internet by Dan Cooper and is cyberstalked leading to her being kidnapped (episode 615, "Ambush").