Earlier this morning, I saw what appeared to be an early model 707 or DC-8 flying very low over St. Helens. Haven't seen many of these in the air since I was a kid. Even more odd, it was sporting the old style straight jet engines (different sound and much louder than current turbofan jets) and a dull gray paint job without visible markings. Did not have a fueling boom, and I'm not sure if the military would be using such a plane for anything else. Anyone have any ideas who would be flying a dinosaur like this?