It is also the gap Demetrios Bradshaw built a company to fill. As founder and CEO of Aeras Aviation, Bradshaw runs a global engine and aircraft asset-management firm that sources, leases, repairs and remarkets the engines and assets airlines need to keep existing fleets aloft while they wait years for new aircraft. Inside Aeras Aviation: how the company keeps global fleets flyingA backlog measured in decadesThe numbers are staggering. "The most valuable asset in aviation isn’t the one on the order book — it’s the one that can fly next week," Bradshaw says. Demetrios Bradshaw is the founder and CEO of Aeras Aviation, a global aircraft engine and asset-management company serving airlines, lessors and OEMs across the Middle East, Europe, Asia and the United States.