ORQA makes drones used by NATO militaries and parts used by Ukrainian manufacturers, and is now learning lessons about building in wartime. Reuters

A NATO drone maker is teaming up with Ukraine's defense industry and building drone parts underground. The company's CEO said it's seeking to learn lessons in wartime production that could prove critical for Western defense companies in a crisis.

Croatian drone technology company ORQA and Ukrainian drone maker General Cherry are jointly developing and manufacturing interceptor drones, components, and other counter-drone systems in both countries. As part of the partnership, they are building an underground factory in Ukraine to make components.

Working amid Ukraine's wartime risks teaches the company valuable lessons in manufacturing while under attack, ORQA CEO Srđan Kovačević told Business Insider.…