JT4 Electronics Technician interview questions

Applied for the position online thru a third-party website. Was told twice that they were not interested. Finally on the 3rd time of submitting my application they contacted me about 2 weeks later. Had a initial interview with an engineer. Very friendly and laid back. It was a very in - depth electronic theory interview. I then received an email about 3 weeks later inviting me to an in-person interview here in their Las Vegas building. The interview consisted of 3 people. It was a very laid back friendly interview. They asked me a lot about my background then went into electronic theory again but this time even more in depth. I had to write equations and diagrams on a white board. I left feeling really good about how it went. The next day I received a phone call informing me they are interested and I passed their desks, and that it just needed to pass security and another's desk before they could write up my offer letter. 6 days later I received the offer letter.