Good afternoon, Mrs. Blackstone. Who the hell is this and what does he think he's doing carting you around like a sack of potatoes?This is Mark, Letty said. He's going to be the model for our new ad campaign. You know, the one aimed at the experienced high-countrybackpacker and rock climber.I trust he's not going to try to pack you into the high country?Heavens, no. He was just proving to me that he could lift a hundred and twenty pounds of camping and climbing gear, weren't you, Mark?