Amy Acker (Audrey Nathan) is a skilled dancer but not a cellist. In order to make her cello playing realistic, she trained with a cello coach to fake three brief pieces of music composer Bear McCreary wrote for the scene. He then had to alter the music after shooting in order to synchronize the soundtrack with her hand movements.
During the lie detector test Agent Koenig tells Triplett that if his grandfather were a member of the Howling Commandos, he would have it tattooed across his chest. This is a reference to the comic "Sgt. Fury and his Howling Commandos," which had a character named private Eric Koenig.
Marcus Daniels (Blackout) first appeared in Nova issue 19 in 1978. He was created by Marv Wolfman, Carmine Infantino, and Tom Palmer.
Coulson can be seen loading a Smith & Wesson M&P "Shield" model carry pistol.
Amy Acker (Audrey Nathan) and J. August Richards (Mike Peterson) previously starred together in another Joss Whedon TV series, Angel (1999).