Gas turbine engines typically include compressors having multiple rows, or stages, of rotating blades and multiple stages of stators. The compressors typically compress ingested air, which is then transferred to a combustor, where the compressed air is mixed with fuel and ignited. During flight, a gas turbine engine can be thousands of feet above sea level. Accordingly, the ambient air pressure can be low, making breathing at these altitudes difficult. In order to pressurize cabin air, some of the compressed air from the compressors is directed through an environmental control system and into the cabin.