 The fate of high rise construction in Miami was greatly threatened by a "One Engine Inoperative" (OEI) policy proposed by the FAA in 2014.This proposal would drastically reduce the maximum permitted height of structures around 388 airports in the country, even causing existing structures to be modified.In the end, the FAA did not go forward with the extreme limitations and even began giving quicker approvals to buildings with heights up to above sea level, leading to many proposed and approved supertall projects.