From the opening scenes, where Mr. Dutton gets ‘fired’, and the building gets blown up, I expected a terrible movie, especially since the explosion was far greater than was likely. But then the movie settled down and became interesting entertainment. I state entertainment, as there is nothing special about the movie. It is hackneyed, not original, and is predictable, with the evil military trying to cover things up, and the doctor and his ex-wife, a virologist with the Department of Defense, trying to unravel what is happening. I would give credit to the snake wrangler, as the snakes are real, without the need for a lot of CGI. Although them coming out of the ground seemed a bit much, but that was later explained that these were snakes bred to be very aggressive. But the snakes in the house is a bit overdone, and a snake coming out of the toilet is too cliche. And I would like to see a movie involving the military where nuclear weapons are not planned, and aborted at the last second. That is just lazy writing. The hospital scenes are believable so at least that did not insult the viewer. The military vehicles did not have any unit numbers on them, and the General’s helicopter did not have any military insignia. But the guts of the military operations seemed reasonable, without a lot of foolish errors, except for the chopper firing at cars. So fun entertainment, but not a great movie. But more enjoyable than I initially expected.