We evaluate the performance of our business segments based on operating income. The engine overhaul period is 6,000 hours. Customers of AirCo include airlines and commercial aircraft leasing companies. In addition, Worthington operates two FAA and EASA Certificated Repair Stations. Moreover, because the Company does not operate jet aircraft, noncompliance is not likely. In March 2014, the Company formed SAIC, a captive insurance company licensed in Utah. Changes in governmental regulations that may affect its business;i. Sales of deicing equipment can be affected by weather conditions. Legacy technology systems require a unique technical skillset which is becoming scarcer. There is no assurance that prior year activity and results will occur in future periods. Future cash flow of the Company's operations can fluctuate significantly. The U.S. Department of Commerce (the "Commerce Department") regulates exports. Accordingly, there is uncertainty regarding the publication of such rates beyond 2021. A restructured lease will likely contain terms that are less favorable to us. Our business might suffer if we were to lose the services of certain key employees. Strategic ventures may increase risks applicable to our operations.