Factual error: It is not possible to be "allergic to all known anaesthetics". Amongst the amide local anesthetics lidocaine, prilocaine, bupivicaine, mepivacaine and dibucaine are naturally occurring substances and if administered without a preservative they cannot trigger an allergic reaction. If Bales is allergic to them, he'd be allergic to the metabolic processes of his own body. They are all powerful local anaesthetics and could easily be used for a radical rhinoplasty such as that required by Bales.
Factual error: When the Joan Cusack character bolts into the control room with the "Mercenary" cassette, you can here the director counting down to roll the tape. A 3/4" tape being inserted and threaded up in the machine normally takes about 8 to 10 seconds, yet the tape plays when the operator hits the play button.
Factual error: In the scene when Baby is changing her clothes in the back of Johnny's car the lights and shadows in the car are moving in the wrong direction. (00:49:30)
Factual error: At the beginning, when Cindy and her friends return from shopping, Cindy's mother asks for her credit card. Cindy hands her several cards and her mother chastises her, saying that she was only supposed to take the Neiman Marcus card. Tucson has never had a Neiman Marcus.
Suggested correction: They could have gone to another town to go shopping, but there are no Neiman Marcus stores within 100 miles of Tucson.
There are two Neiman Marcus stores each about 1 hr 40 minutes from Tuscon, one in Scottsdale and one in Tempe. Plenty of time for Cindy and her friends to drive there, shop and get back. Considering both Cindy and her one friend appear to have Nieman Marcus bags, (the white bags with gold designs on them) it appears they made a road trip.
Factual error: When Loretta and Johnny leave the restaurant in Brooklyn and drive to JFK there is the long car ride scene through the Midtown Tunnel. There is no tunnel between Brooklyn and JFK.
Factual error: When Clay, Julian, and Blair are driving from Palm Springs to Los Angeles almost at the last scene, Julian dies as they are driving through Joshua tree. That would be the opposite direction to travel from Palm Springs to Los Angeles.