Trey Karlovich

Part of Premiere Global Services, Inc., Premiere Communications, Inc. sells calling cards.

Wiltel Communications Group, Inc. provides customized communications solutions to enterprises, and federal government. The company was founded by Robert D. Williams and is headquartered in Tulsa, OK.

The NORDAM Group LLC engages in the manufacture and repair of aircraft components. It offers original equipment manufacturing for business, commercial, and military aircrafts; and provides repair and maintenance services. The company was founded by Ray H. Siegfried II on April 1, 1969 and is headquartered in Tulsa, OK.

Hall, Estill, Hardwick, Gable, Golden & Nelson PC is a full-service business law firm that was founded in 1966. The firm has locations in Oklahoma, Texas, Colorado, and Northwest Arkansas. Hall Estill Attorneys specialize in representing clients in various areas of law, including Oil & Gas, Intellectual Property law, Labor & Employment law, Litigation, Environmental Law, and Corporate Services.

The American Lung Association provides health care services. It operates as a non-profit organization that provides health services and fights for healthy lungs and healthy air. The company was founded in 1904 and it is headquartered in Chicago, IL.

Avansic, Inc. provides digital forensics services to the business and legal communities. The firm offers e-discovery and digital forensics services to attorneys, litigation support teams and business communities across the nation. It has offices in Dallas, Houston, Little Rock, New Orleans, St. Louis and Tulsa. The company was founded in 2004 by Gavin W. Manes and is headquartered in Tulsa, OK.

Aeronautical Repair Station Association, Inc. operates as a civil aviation maintenance firm. It supports professionals at commercial passenger and cargo airlines military stations, ground handling firms, FBOs and airports. The company was founded by Sarah MacLeod in 1984 and is headquartered in Alexandria, VA.