45,000 sounds like A LOT of engineers. An American aviation engineer wouldn't get out of bed for less than 100k a year. That makes it $4.5bil in salary alone. That's almost 10% of the company's revenue and over 80% of net profit.
Another number that kind of scratched my brain the wrong way is "14,000 Boeing aircraft flying today". Are there that many flying? Even with military airplanes and helicopters, that looks like a VERY big number.