A school system outside Washington is poised to become the nation’s biggest operator of electric school buses.

WASHINGTON ― Raytheon Technologies plans to challenge Lockheed Martin’s proposed $4.4 billion takeover of Aerojet Rocketdyne with the U.S. government, CEO Greg Hayes said Wednesday. “They [Aerojet Rocketdyne] are a huge supplier to us, and if that merger actually happens, you don’t have an independent supplier on the solid-rocket-motor side. And also, I think it gives us pause as we think about the competitive landscape going forward,” Hayes said at the Barclays Industrial Select virtual conference.