Since Boeing gets discussed here occasionally, I would like to share this interesting data on their historical P/E ratios: https://www.macrotrends.net/stocks/charts/BA/boeing/pe-ratio
Boeing is in a bubble, and in a PR crisis at the same time. Airbus is gaining ground as a result. So I would not encourage anyone into Boeing right now. The sentiment has been extremely positive, which means there's absolutely no value to be had.