I watched this seemingly older movie probably in 1988-1991 in Kentucky in the library at school.
What I recall is a futuristic setting - perhaps in a desert. There were domes, and I recall white suits with red on them. There were two factions - good guys (possibly from the past/Earth) and bad guys who were out to get them. I know this is vague but I can’t think of what this is to save my life. I’ve looked at other posts in hopes of figuring it out, but no luck.