During the many car pursuit scenes the background images almost never match from interior cab shot to long full shot of highway.
After the shootout at the end of the film when the Radar Secret Service Agents return to the helicopter, it is facing in the opposite direction to how they left it.
The car the crooks are driving is a "Modern" sedan, but the car that crashes is a square-bodied one.
U-238 is radioactive, not "radioactivated".
To judge by the view from the window, Hamilton's office is in a building built in the middle of the National Mall.