Lots of police departments in the U.S. have tear gas, which they throw at disorderly civilians. But where does that tear gas come from? And how big a business is it for the companies that produce it? Plus, there’s word this week that Chinese hackers stole records of 4.5 million patients from computers at Community Health systems, one of the largest hospital networks in the Southeast. Healthcare records contain social security numbers, birth dates, addresses - a goldmine of information for identity thieves. Which is likely to make them a big fat target for future hacks. Will they be ready? Many experts say no.