Robert B. Gregor

Oakridge Holdings, Inc. engages in the provision of aviation ground support equipment. It serves the United States Armed Services and businesses domestically and internationally. The company was founded on March 6, 1961 and is headquartered in Chicago, IL.

Stinar HG., Inc. provides aircraft ground support equipment. It offers lavotory service trucks, lavotory service carts, potable water carts, potable water trucks, passenger stairs towables, passenger stairs chassis mounted, maintenance high lift, cabin services high lifts, catering high lifts, government high lifts, engine maintenance platforms, disabled passenger transporters, flight line tow trucks, oxygen and nitrogen carts, flush and fill carts, and waste drain carts. The company was founded by Frank Stinar in 1946 and is headquartered in St. Paul, MN.

EF Johnson Technologies, Inc. develops and markets secure communications solutions. It offers portables, mobiles, ATLAS systems solutions and ATLAS systems products. The firm serves the first responders in the public safety and public service, federal government, state and military sectors. The company was founded by Edgar F. Johnson in 1923 and is headquartered in Irving, TX.