This system is not a good one. It's like a Swiss cheese -- we all know this. I don't think any of us would congratulate ourselves or anyone else who is involved in airport security with the job we have done over the last 10 years.
The good news is that catastrophic crashes are happening less and less. Planes are now made so well and pilots and crews are trained so well, a lot of things that were very problematic with airline safety are now things of the past.