The document discusses a proposal from Aerostats All Australia (AAA) to use tethered balloons (aerostats) to provide mobile coverage to 70% of Australia that currently lacks it. AAA has developed a feasibility study for the proposal with input from telecom industry experts. The proposal aims to double mobile coverage over multiple years by co-locating aerostats with existing mobile infrastructure. Each aerostat would need its own radio spectrum and support for maintenance. AAA estimates the annual operating costs would be around $85 million for a fleet of 250 aerostats and hopes to get funding support from the government's universal service obligation fund and a mobile carrier partner.