The 9 million figure is an exaggeration by an order of magnitude or two. You might want to check out for example http://en.wikipedia.org/wiki/Witch-hunt (or a number of other sources - these all discuss how the myth of 9 million deaths originally came to be).

The parent's claim about having "too much code for standard human code reviews" is just laughable. Proper reviewing takes a fraction of the time writing the code in the first place does. How do you end up in a situation where you have people banging out millions of lines of code but no-one has time to do human code reviews? Is all of the code machine-generated? Also, why can't the parent do detailed run-time coverage analysis? Is his team lacking a testing framework for this? Why are their banging out millions of lines of code without proper run-time tests?