Can you really assume they have no evidence? You'd hope they'd have sensors and analysis capable of forming some conclusions, such as tracing the drones to a o

Can you really assume they have no evidence? You'd hope they'd have sensors and analysis capable of forming some conclusions, such as tracing the drones to a origin point, or classifying based on signature, etc. They've haven't provided much and there's a lot of questions unanswered, but they've said unequivocally what they think the origin is not.