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A rattlesnake tastes the air. - 

From the Marketplace Datebook, here’s a look at what’s coming up Friday:

  • In Washington, the Labor Department reports on unemployment for February.
  • The Federal Reserve is scheduled to issue consumer credit data for January.
  • And if snakes are your thing, and why wouldn’t they be, Sweetwater, Texas hosts its annual Rattlesnake Roundup. Billed as the world’s largest.