Fat Boy IRL. But without guns

https://en.wikipedia.org/wiki/Crawler-transporter

It checks out

The engineer must be a FaF player

Some of the people who made SupCom probably saw those on TV when they were growing up. Or they intentionally looked at NASA vehicles for inspiration about designs/style, especially for UEF.

How the first Novax satellites were transported in the UEF space program

poor dudes

There was no budget left for guns, I'd assume