Interesting Engineering on MSN

Drones evolve from watchers to non-lethal responders in safety tech breakthrough

Drone tech moves beyond surveillance, safely subduing armed threats in live trials, showing potential for rapid, non-lethal response.

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23、 bù guǎn bié rén yǒu duō hǎo ， dōu hé wǒ wú guān ， bù guǎn nǐ yǒu duō huài ， wǒ dōu xǐ huan 。