Typically sloppy and incomplete reporting. Said "rocket launcher" is clarified in later reports. Its the housing of a AT4 rocket type piece of ordinance. And initial examination suggests its the non-explosive training type model. If its the ones we used, I've seen these training models occasionally available on the public market as collector's items.
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http://www.news24houston.com/content/headlines/?ArID=29246&SecID=2
http://freeinternetpress.com/article.pl?sid=04/05/19/0145254&mode=thread
(ignorant editor comments here)
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