Sadly, that's exactly what I'd be worried about if I were piloting that contraption anywhere near populated areas!

Of course, since I'm not a pilot, I would probably be one of the folks on the ground eating dust and making sure the mapping "missile" is performing optimally.
What I can't figure out from the article is if this device works by just passing it over areas of ground they want to map and study, or whether it needs to be slowly "dragged" on the ground to do its job. The latter seems a lot more dangerous (for the helicopter pilot, and for the mapping device itself), but the former seems odd. I like to think I'm a geek, but when it comes to geoscience and mapping, I'm just as clueless as the next gal.
I live near a large portion of Camp Bullis' boundary, but I can't say I've seen or heard any helicopters in the area today. I'll keep my eyes out for the device, as it's got to look downright weird in the air, just as it looks downright weird mounted to that pick-up truck for transport! It's supposed to be around here for 2 weeks, so maybe I'll have an opportunity to observe it.
I always get a kick out of seeing the Apache Blackhawk and other military helicopters fly over when they're actively doing training at Camp Bullis.