https://techcrunch.com/2019/09/20/take-cover-its-a-drone-with-a-nail-gun/

The FAA has warned against equipping your drone with weapons such as flamethrowers and handguns. But can a nail gun really be considered a weapon — that is, outside of Quake? Let’s hope not, because roboticists at the University of Michigan have made a roofing drone that uses that tool to autonomously nail shingles into place.

In a video shot in UM’s special drone testing habitat, the craft flies up, approaches its bit of roof, and gingerly applies the nail gun before backing off and doing it a couple more times.