Faded Starlight
On their emergence into a nameless binary brown dwarf system, the long-ranged sensors of the fleet lit up!
"Sir, our sensors have detected artificial mass signatures half an AU from our position!"
"Identify the signatures!"
It took some time for the sensors to resolve what they picked up. The longer it took, the more the Vandals relaxed a bit, because active threats usually radiated more heat and signals and therefore showed up clearer on the sensors than dead objects.
"It's a debris field, sir! Around eight shipwrecks have been identified, of which at least half are light carriers or equivalent. An unknown number of mech wrecks surround the foundered ships."
While the Vandals and the Swordmaidens remained vigilant, they largely failed to pick up any active ships or mechs. Whoever left these wrecks might have already departed the binary star system.