It's a warm, sunny morning at the Homestead National Monument of America in southeastern Nebraska. A burn crew dressed in yellow and green flame-resistant clothing is about to set a patch of tall-grass prairie on fire — on purpose.
These kind of burns aren't unusual. But today's burn is; a team from the University of Nebraska is testing a fire-starting drone.
Small drones have become a favorite high-tech tool, or toy, for all kinds of people. But researchers hope this new firefighting drone they are designing can save lives. First, firefighters light the edge of the prairie using big gas cans called drip torches. As the waist-high flames start to turn the grass black, computer science professor Sebastian Elbaum gets the drone ready to launch.
"Once they build this horseshoe shape of black area, then we're going to have our drones fly across this field and drop some of these balls that will ignite into a flame," Elbaum explains.