When a twister looms on the horizon, most people run for cover. Not so for Steve Decker and his aspiring meteorologists, who prefer to run towards it. During a Midwest field trip as part of the summer session course “Severe Weather Forecasting,” Decker, an associate teaching professor in the meteorology undergraduate program at the School of Environmental and Biological Sciences, and his students, armed with cameras and curiosity, sought close proximity in order to understand the structure of storm formation, tweeting their discoveries with the hashtag #RUChasing.