This is the final episode of the first season where the opening credits say "events occur in real time"
The exterior of the Hotel Rosslyn, where David Palmer meets with Carl Webb, was filmed at 451-459 South Main Street, Los Angeles. The interior was filmed under the Regent Cinema across the street.
The airport in North Hollywood is actually the runway of Whiteman Airport in Pacoima, CA.
Platt's Auto Body and the surrounding alleys were mostly filmed around Harlem Street and 5th Street in Downtown Los Angeles.
This episode marks the first appearance of Zach Grenier as Carl Webb.