Jun 9th 2015, 15:30 NASA's so-called flying saucer launch Monday had a super-sized connection to Sioux Falls-based Raven Industries Inc. The balloon used in the launch was a high-altitude balloon from Raven Aerostar. It has a volume of 34...

Timothy Compston finds out why aerostats are making their mark in the on-going battle to secure borders and critical infrastructure from a wide array of threats and to thwart drugs smugglers on land and sea