50 Years With A Passion For Service What began in 1964 as a Texarkana, Texas-based Conoco fuel distributor and is historicall ... y known as Truman Arnold Companies named after the founder, TAC - The Arnold Companies is among the largest fuel wholesalers and aviation service providers in the country today. Steady growth, positive financial results and a diverse industry base consistently make TAC one of the top private companies in the United States. Our expertise includes: - Wholesale Fuel marketing, supply, distribution, management & support as TACenergy - Aviation ground support services at 15 FBOs across the U.S. as TAC Air - Aircraft charter, maintenance & management as Keystone Aviation read more