The Greenbrier, site of the trade show Abby attends, is in White Sulphur Springs, WV. This is about a 4 hour drive from Washington, DC.
Lauren Holly (Jenny Sheppard) used to be married to Danny Quinn, the brother of Francesco Quinn (Cpl. Luis Romero). In this episode she plays along side her ex-brother-in-law.
This is the second episode with Francesco Quinn, he was previously Gunnery Sgt Alverez on One Shot, One Kill (2004).