Well if you have alot of money, and armed guards I dont think people will just do an armed robbery against you. Its far more likely that an infiltration can occur, so that is the risk you need to worry about.
My point exactly. The guards are a security risk as well as a feature.
https://en.wikipedia.org/wiki/Intrusion_detection_system
The whole point military quality equipment makes it zero percent chance of losing BTC is just wrong. As long as there is greed and "bad" people you cant just blindly trust.
Look at this coinbase - http://www.coindesk.com/former-silk-road-dea-agent-pleads-guilty-to-bitcoin-theft/ . These DEA agents had military quality... they had secret clearances... should be great guys. But in actual world they got greedy and stole BTC from what should have went into government holdings.
I still think cold wallet is key. I think hardware wallet and paper wallet are strongest ways to store BTC if done right.