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South Korea says North Korea has test-launched multiple cruise missiles toward the North's eastern waters. The launches on Wednesday are the North's fourth weapons tests since the US and South Korean militaries began large-scale military drills last week. North Korea views the drill as a preparation to attack it. The US-South Korean military drills are to end on Thursday. South Korea's Joint Chiefs of Staff said North Korea fired several cruise missiles from its northeastern coastal town of Hamhung. It says the South Korean and US intelligence authorities were analysing further details of the launches.
Aviation startup Boom Technology says it will power supersonic passenger jets with engines designed by a company better known for making small engines used on drones and cruise missiles. Boom said Tuesday that Florida Turbine Technologies, or FTT, will design the engines with help from GE Additive, a division of General Electric. Boom says the plane could be making test flights in 2026 and carrying passengers a few years after that. The company says its 88-seat jet, called Overture, will use four engines, fly up to 1.7 times the speed of sound about 1,300 mph and use sustainable aviation fuel. The Denver company generates plenty of scepticism in aviation circles for its ambitious schedule and certitude that supersonic passenger flights can be economically feasible and environmentally benign Concorde wasn't, so it stopped flying. Getting the plane certified will be daunting, with regulators more cautious after two deadly Boeing Max crashes. Flights would likely be limited to oc