Older Denise Christopher has a bit of an Indian accent when she speaks, but the young Denise does not.
They reuse the shot of the sleeper agent walking around a corner twice.
Ronald Reagan was 6' 1" tall and the actor chosen to portray him appears to be around 5' 6".
The secret service agent received a radio message to look out for a Caucasian suspect with a would from a straight razor. The razor blade shown in the bathroom is a single edge safety razor, not a straight razor. A straight razor is an all in one resort where the blade typically folds into the scales like a pocket knife. They are totally different tools.
The story is set on March 30 1981. At 5.08, the Hall & Oates song Private Eyes can be heard yet it wasn't released until August that year and the album of the same band was t released until a month later.
At around 29 minutes, Lucy and Jiya use a modern laptop to show Christopher her a picture of her wife and family yet Christopher doesn't even question the cordless machine.