Early in the film, when Dr. Karen Watkins drives up to the office, her car leaves slightly whitish tire tracks. When she backs away and drives out, the tire tracks are very noticeable and dark-colored. These marks are not behind any other cars in view.
General Mark 'Stonewall' Jackson, played by Alex Cord, is wearing a Class A uniform that is noticeably lacking in any sort of identification, nor unit patches on either of the sleeves. However the biggest inaccuracy is that the character is an Army General, but his rank insignia on his epaulets are Silver Oak Leaves (which makes him a Lt. Colonel).
The hero says a certain isotope of Lithium would, in a large enough concentration at normal or near-normal temperature and pressure, blow-up in a thermonuclear (fusion) explosion. It is contrary to physics as known today for any isotope of Lithium or any other element could spontaneously form a thermonuclear explosion except under circumstances of extreme pressure and temperature such as exists in the core of a star like the Sun.