Michelle calls Chloe at home and orders her to return to work. Less than seven minutes later, Chloe has changed her clothes and appears at CTU.
At the end of the previous episode Paul Raines is shot in the torso once. However In in this episode doctors say that he has been shot twice.
In the helicopter, a medic says "Tell them on the ground we need two liters of A-positive hemo." If the victim is A-positive, he can also be given A-negative, O-positive or O-negative.
As the van with Jack is leaving the tunnel, the construction crew's flagger is holding a red "Slow" sign instead of the usual yellow.
Tony Almeida reads out the wrong the license plate number.
John Hansen calls his wife "Daurie, " instead of Laurie.