As rockets go, the Saturn V will remain as the champion of its century. A concerted engineering effort brought theory into the hard cold realm of facts, figures and data sheets. Alan Lawrie and Robert Godwin in their book Saturn V go back to the testing phase of these leviathans and recall the glories when modules passed tests or the tragedies of failures. For behind the roar and the flame of the rocket's exhaust, were countless validations and verifications that ensured this man-rated rocket performed 'nominally'.