Real life husband and wife, Darren Bailey and Nicole Bailey, play husband and wife in the film. The reason being that the nine central characters in the story are all loosely based on the people playing them.
The classroom in which the explosion took place shot it's clean scenes in the morning. The room was made up to look damaged over the next few hours before the aftermath scenes were filmed. Immediately after, the room had to be cleaned back to normal, as it was a working classroom on Miami University's campus and had to be operational for the following mornings classes.