 WILMINGTON, Ohio--BUSINESS WIRE--Air Transport Services Group, Inc. Nasdaq: ATSG, the leading provider of medium wide-body aircraft leasing, contracted air transportation, and related services, today reported consolidated financial results for the quarter ended June 30, 2021. ATSGs second quarter 2021 results, as compared with the second quarter of 2020 include: Customer revenues increased 32.1 million, or 8 percent, to 409.9 million. Second-quarter aircraft leasing and ground services r 