In 1991, J&B Aviation Services, Inc. opened its 2400 square-foot office and warehouse facility in Fairfield, California--35 miles north of San Francisco near the Napa Valley.
The company, founded by Alan J. Janis and Bruce K. Warne, filled the void in the marketplace for products and services that the absence of McCormick Morgan Power Systems Engineers had created. J&B's expertise and insistence upon premium quality products promptly gave them the reputation as the industry leader.

Their unique 400 Hz cable assembly designs, with options for replaceable noses, swiftly became the most popularly used assemblies both with commercial and government customers.
J&B Aviation is the exclusive North American distributor for numerous ground support manufacturers. Along with their reputation, J&B's product line began to grow considerably within and beyond 400 Hz power distribution.
Pre-conditioned air, potable water, lavatory service and air-start products have expanded extensively. While most recently, J&B has developed cutting-edge gate and ramp accessories including aircraft docking systems, baggage chutes, baggage/wheelchair lifts, and carts, reels and baskets for the storage of 400 Hz cables and PCA hoses.
J&B's sales increased--and continue to do so--by nearly 25-35% each year. As a result, its staff, office and warehouse space have had to meet growing demand with substantial expansion. Doubling their office and warehouse space in 1997 appeared sufficient until 1999, when the home office moved to an 8600 square-foot location in Fairfield.
The millennium ushered in the opening of J&B's service division. J&B's staff has also grown extensively. The offering of specialized services began in 1999 and include system design, start-up, installation, project management, training and specification review.

In 2002 J&B Aviation Services became part of the Illinois Tool Works family of companies. J&B Aviation now joins Hobart Ground Power, Trilectron Industries, Air-A-Plane, Houchin Aerospace and Axa Power in forming the ITW GSE Group.
In 2006 J&B Aviation celebrated its 15th Anniversary as the premier supplier of ancillary products to the aviation industry. As a result of successful sales growth J&B has had to once again move to another facility in order to keep up with the demand for its products and services .

In June of 2006 J&B once again doubled its size as it moved from its Fairfield location to a new location in Vacaville just a few miles away. With the new warehouse facility J&B is now able to stock even more inventory to be able to provide customers the expected level of service that has become synonymous with the J&B name
The dedicated J&B staff consistently stays abreast of improving technology, offering various design options for equipment and the ability to devise new products in response to a customer's special requirement. With such a wide range of services, products and possibilities, it's not difficult to understand why many domestic airlines, military bases and over 100 airports worldwide choose to rely solely on J&B Aviation Services, Inc. as their supplier.