Other mistake: During the scenic elevator rescue scene, a helicopter lowers the Fire Chief down to connect a cable to the top of the elevator. The cable is seen to be hanging no more than three feet from the side of the building. If this were the case, the helicopter's rotors would be hitting the building. (02:04:10 - 02:06:10)
Other mistake: At the end of the movie, the security guard (OJ Simpson) gives Mrs Mueller's cat to Harlee Claiborne. Why? OJ would have no reason to know the two were on a date, and therefore no reason to give him her cat.
Answer: The briefcase arrived the same time the golf clubs did.