It was during the Gulf War that I discovered the gas mask to be an object. As it became increasingly credible and imminent, the unfathomable menace was crucially rescaled to the toxic potency and dispersal pattern of law-abiding molecules. So it went with the gas mask: the Gulf War transformed it from a vaguely morbid mental image into a facial object of survival. But to be drafted on the nation-wide defensive maelstrom as a life-saving object (and not, as it happened, a life-taking one) the real effectiveness of the gas mask was by no means sufficient - it had also to be effectively realized, and this in turn necessitated that confidence in its claimed capacities had to be gained, and competence in its appropriate performance mastered.