what is your number one goal for this interview

Have ONE clear goal you say to yourself before you join — it focuses you. For you: 'I want them to remember me as the easy-to-work-with, documentation-focused, root-cause engineer who fits this team.' In plain terms: 1) They should see you as SOMEONE THEY'D WANT ON THEIR TEAM (fit — friendly, collaborative, calm). 2) They should see you as the person who SOLVES PROBLEMS AT THE ROOT and WRITES IT DOWN so the field benefits (the GPS mission). 3) They should see your MATERIALS + MEASUREMENT depth as a genuine asset to a metal-deposition group. That's it — one line: 'My goal is to leave them convinced I'm the engineer who diagnoses, documents, and supports — and that I'd be a good teammate.' Everything else (answers, stories) serves that one goal. Hold it in your head when you join and when you're nervous.