In downtown San Diego, Calif. contractors had to halt on a courthouse expansion project because the cranes used in the project had to comply with Federal Aviation Administration rules. Cranes cannot exceed a 511-foot height limit, and the cranes used in this project had been near 600-feet high. 

The height of the cranes, according to the FAA would cause chaos for air traffic and lead to possible plane crashes. One contractor, Brewer Crane and Rigging, need $500 million for the courthouse project to be completed or be granted permission from the FAA to exceed the crane high to more than 600-feet above sea level. 

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