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In this Friday May 16, 2014, photo, Cummins engineer Mike Hughes, left, talks with eighth grade students at Greenwood Middle Schoot about the virtual reality computer-aided drafting system being demonstrated on the screen behind him in Greenwood, Ind.  (AP Photo/The Daily Journal, Scott Roberson)

In this Friday May 16, 2014, photo, Cummins engineer Mike Hughes, left, talks with eighth grade students at Greenwood Middle Schoot about the virtual reality computer-aided drafting system being demonstrated on the screen behind him in Greenwood, Ind. (AP Photo/The Daily Journal, Scott Roberson)

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