Continuity mistake: On the Pentagon the plot shows the USS John R Pierce intercepting the two Soviet ship but the marker on the plot says DD722 (it is upside down). DD722 was the USS Barton whilst the Pierce is correctly shown in the external shots as DD753. (01:12:25)
Continuity mistake: In the final scene in the cave, the protagonist walks under the rain and becomes wet. After the whole poisonous needle thing, the camera cuts back to her and she is completely dry. (01:41:15)