The snow depth in Milwaukee is now the deepest it's been in about 20 years — as snow shovelers with sore backs or shoulders can well attest. In most cities, it's up to the property owners to hire a plowing service. Or, they buy a snowblower or a good shovel, and do pavement clearing themselves. But West Allis recently joined the ranks of snowy North American cities that match older, or disabled, homeowners with volunteer shovelers. West Allis has about 60,000 residents. Some people live in older