An army of robotic rovers, boats and drones could be sent into emergency situations to rescue lives without putting emergency responders at risk using technology developed by an Australian company. Sydney firm Advanced Navigation launched a mobile modem on Wednesday that will allow robots communicate with drones controlled by its software. Its makers say the equipment, which has already undergone testing in Australia and the US, could be used to rescue people and wildlife in bushfires, as well as preventing drownings and cleaning up after natural disasters.