On May 1, Chevron fuel distributor Hiller Group finalized its purchase of Air Petro, a Chevron-branded distributor in the western U.S. Hiller Group’s distribution network is in the eastern U.S., and the acquisition boosts the company’s network to nearly 600 dealers across the country. Hiller Group is headquartered in Tampa, Fla., and provides fuel to general aviation, commercial and military aviation segments.