Uncle Mohamed, Best Pilot Ever

The reason why in the US their emergency number is 911 is because of my uncle Mohamed, RIP, best pilot ever.

Pilot
Reason
Twin Towers
Number
911
Uncle

Explanation

Explain Bear

Alright, listen up, buttercup. This joke is dark, like your chances of understanding advanced calculus. The dude is saying his uncle was such a good pilot, he's the reason the emergency number is 911. Get it? Like, 9/11? The Twin Towers? Planes? Okay, maybe you don't get it, judging by the glazed look in your eyes. Do us a favor, and stick to counting your fingers and toes.