Anyway, the drone broke off from its laser-straight trajectory and came under what showed every sign of being manual control. After hunting and seeking around the mountainside for a few moments it settled down on an angled patch of gray scree. The red idiot light had taken to flashing on and off and counting down the seconds. It landed with six seconds of flight time remaining. Some small reserve of juice was then spent unfolding an array of photovoltaic cells. When the sun came up, this thing would begin to recharge.