The last UPS strike in 1997 put the hurt on a lot of people. According to a recent study done by a Michigan-based economic group, if another strike happens this year, the economic damage and strain on the economy will only be worse this time around.The company that did the study, the Anderson Economic Group, mentioned in a Reuters story, said the strike pending this summer, unless UPS and the Teamsters can come to an agreement, will top $7 billion for a 10-day work stoppage.UPS customer losses would top $4 billion, and lost wages of $1 billion would be realized ...