Thomas J. Sidman

NII Holdings, Inc. engages in the development and provision of wireless communication services. It offers mobile telephone voice, wireless data, push-to-talk services, business solutions, and voice and data roaming solutions. It operates through the Brazil segment. The company was founded in 1995 and is headquartered in Arlington, VA.

SpectraSite Communications, Inc. was previously engaged in providing of outsourced antenna sites to the wireless communications industry in the United States. SpectraSite's business included the ownership, licensing and leasing of antenna sites on towers and the management of rooftops and in-building telecommunications access on commercial real estate. SpectraSite's customers included were wireless carriers including Nextel, Cingular, Sprint PCS, AT&T Wireless, T-Mobile and Verizon Wireless. THe company was based in Cary, NC.

Jones Day LP provides legal services. It offers services to the airlines, aviation, automotive, construction, energy, healthcare, insurance, media, pharmaceuticals, and telecommunication industries. The company was founded by Edwin J. Blandin and William Lowe Rice on March 1, 1893 and is headquartered in Cleveland, OH.

Nextel Communications, Inc. is a provider of wireless communications services in the United States

Cyren Call Communications Corp. provides advisory and support services for the development of wireless broadband networks that carry priority public safety communications. The company was founded by Thomas J. Sidman, Keith W. Kaczmarek, Morgan Edward O'Brien in 2006 and is headquartered in McLean, VA.