Its not a Predator, it’s a Reaper – It’s MUCH bigger, with far more payload and is usually armed. Reapers are hunter killers, Predators are ISR. Which begs the question, why was there a Reaper over the Black Sea?
Reaper is ISR capable, think the US retired their Predators a while back, so not that unusual, they’ll just be doing basic recce, as they’re cheaper to operate and have longer duration.
They’re old tech though, doubt the US care about finding it, they’ve already got the next generation coming in with Protector.