Continuity mistake: In the first getaway scene Tanner Howard is driving the blue car with blue latex gloves still on from the robbery. As he drives he pulls off the gloves, but in the very next shot of him driving he has the gloves back on. (00:04:35)
Continuity mistake: At the end of the movie when Jeff Bridges is sitting on the porch the red ashtray on the table next to him disappears from the table.
Answer: The fourth person killed was the security guard in the bank at Post. He was killed just before the bank customer.