The Department of Transportation (DOT) is eliminating paper strips, copper communications wiring, and computer floppy discs from its aging air traffic control system, but it is calling for more funding to continue upgrading and integrate new technologies like artificial intelligence and software to streamline US flights. The $12.5 billion allocated in President Donald Trump's spending bill is a "down payment" for the upgrade, but Transportation Secretary Sean Duffy warned that more funds are needed for the software side of the project. Since the approval of the spending bill, almost 50% of all copper wires in the air traffic Control system have been replaced, approximately 270 radio sites were converted and 17 towers started using electronic flight strips. Over 4,500 FAA sites are also receiving new radars, digital voice switches and training simulators. The system has been under scrutiny following several high-profile incidents, including a fatal collision last month that killed two pilots.