Sprint, SoftBank in deal with U.S. panel on security: source Tue May 28, 2013 8:08pm EDT (Reuters) - SoftBank Corp and Sprint have reached a deal with U.S. authorities on the national security aspects of their pending deal, a source familiar with the situation said on Tuesday. The source, speaking on condition of anonymity, said the deal includes the creation of a four-person oversight panel and promises related to the eventual removal of certain Chinese equipment from U.S. networks. Reporting by Alina Selyukh in Washington; Editing by Stacey Joyce