Founded in 2013, PreNav has secured $1.2 million in seed funding and is working on raising Series A financing. It is currently beta testing its precision drone technology, which carriers/tower operators could use to inspect towers in a safer and more efficient manner. The drones could zoom in on everything from nuts-to-bolts (literally) and cabling, plus deliver 3D images that customers can use to determine a tower’s structural status. And with more than 100,000 towers in the U.S. alone, that could present PreNav with a big opportunity.