Like you, I can't find the exact info, but I'm pretty sure it was an episode of Aircrash Investigations. I saw a repeat with that episode a few months ago. I

Like you, I can't find the exact info, but I'm pretty sure it was an episode of Aircrash Investigations. I saw a repeat with that episode a few months ago. I didn't come away with the impression that they'd actually implemented blast-proof though, just that they'd redesigned so that some blasts wouldn't dramatically cause airframe failure.