https://www.cnet.com/news/heres-the-tiny-drone-the-us-army-just-purchased-for-soldiers/

The US Army is getting tiny personal surveillance drones as part of a $2.6 million contract with thermal imaging and technology company Flir. 

The drones, Flir's Black Hornet Personal Reconnaissance Systems, are the world's smallest combat-proven nano-drones, according to the company. The US Army will be receiving the next generation Black Hornet 3, which weighs a mere 32 grams and adds navigation capabilities in areas where GPS can't be used. It also flies 2 kilometers at over 21 kilometers an hour, has sharper imaging processing and features the Flir Lepton thermal microcamera core.