TSA Lets Loaded Gun Through

I thought that they beefed up security to avoid something exactly like this?  The sad part: they say this happens a lot.

We have all been to the airport, we all know how tight security is.  For some reason, it's gotten even tighter now but they are still letting things slip through that should never get through the front door of an airport.

Recently a man accidentally packed his loaded gun in his carry on bag.  He didn't realize it was with him until the plane was in the air.  Once on the ground he let officials know where he found that this kind of thing happens more often then you think.  ABC news reported that the failure rate in near 70% and that's at major airports.  So whats up with that TSA?  I think maybe we need some retraining among the ranks.