When Holcombe and Von Clausen are doing surveillance on Hansen, the side windows of their car are coated in ice too thick to see through. In the next sequence, they pursue Hansen with crystal clear windows.
When Cindy leaves Halcombe's house she gets in a cab with a taxi light on the roof. When she gets out at the hotel, the roof light is gone.
In the epilogue, set in 1983, a modern flat-screen TV (turned off) is on the wall at the airport.
After Robert picks up Debbie Peters for a photo shoot, a 2005 Ford truck drives toward the camera.
When Sergeant Halcombe meets Mrs. Morehead in a café, a TripAdvisor sticker is on the entrance door.
One shot at Anchorage International Airport shows several Alaska Airlines 737s parked at the gate. Alaska Airlines started flying 737s in the 1990s.
The movie is set in 1983 but Halcombe's car has a 2012 registration and inspection sticker in the window.