The portrayal of Gus Grissom in this movie is slanderous and an OUTRIGHT LIE. Grissom was one of the top-tier astronauts in the space program. One of the most intelligent and most achieved of the group, he was on the short list to be first to walk on the moon. Love this flick, but it is FAR from historically accurate. And BTW, a scientific investigation, (well before this movie), confirmed that a malfunction blew the hatch on the Liberty Bell capsule, so... the writers, director and producers of this movie can take a flying leap for mankind!