Union apprenticeship sign-ups near Seattle - first time posting

I heard of an apprenticeship with paid on-the-job training for people changing careers. Thank you in advance. Classes are in the evening and work is during the day. Did anyone go through it?

The aptitude test was mostly maths and reading a diagram. Free practice tests online were enough for me.

Bring your transcripts and any proof of work history. They asked for both in the interview.