A new Carnegie Mellon University research paper estimates that a public-safety voice and data network built through a public/private partnership would cost about $10 billion. The paper also noted that if the federal government’s Integrated Wireless Network (IWN) network could be extended and used for a nationwide public-safety network, the cost would be around $6 billion.
http://mccmag.com/newsArticle.cfm?news_id=3422
http://mccmag.com/newsArticle.cfm?news_id=3422