The Skyfront Perimeter, a 6.5-foot diameter quad-copter unmanned aircraft system, takes off July 31 over a stretch of the Trans-Alaska Pipeline System north of Fairbanks. The four-mile flight was the first of its kind in the nation testing the ability to fly operations beyond visual line of sight, which is a key step to take advantage of the ability to conduct a multitude of operations such as infrastructure inspections or wildlife monitoring. (University of Alaska Fairbanks photo)