SINGAPORE — An Israeli defense company debuted its newest surveillance drone at the Singapore Airshow this week, which it says will enter serial production in 2025 for an undisclosed customer that already placed an order. The drone, dubbed Hermes 650 Spark, is the latest member of Elbit System’s Hermes family of systems that have existed for decades. “The Hermes 650 sits in between the 450 and 900 variants, it can carry 260 kilograms of useful payload spread across two payload bays, and can fly