Really, how many WalMarts does a town of 137,000 need?  There are already 2 within the city, more within close proximity of Thornton, and plenty more stores will be built in Thornton, but WalMart, much like Amazon, will never be satisfied until they take over as much business as they can, growing beyond all reason, putting stores out of business where you actually have intelligent people who offer customer service and know more than just where something might be located.