How secure is your web hosting?

Our web host of choice is hosting 60,000 web sites, has 300 servers and 25 full time technical people. The ownership of the company has never changed. They are cash flow positive and profitable.  They have redundant servers.  As far as physical security for the web host, aside from being on two power grids, they have two huge Caterpillar generators, plus two levels of uninterruptible power supplies which can run everything for 30hrs... multiple redundant power circuits and network paths. To get into many of the rooms you have to have a key, type in a pass code and use your hand print while looking into a camera.