Heard a loud, rumbling roar for about ten seconds at 11;30 pm. looked out the north facing window and saw a delta shaped craft with a sharp angular swept wing slowly pass overhead from south to north, then disappeared over roof of home next door. object was gray in color against dark, overcast sky but had stationary white lights at each "wing" tip and each end of "body". body resembled a plane but wings were very swept back, not like an airliner, but more like a fighter jet. lights did not blink and i found that unusual for a plane if it was one. the roaring woke up my wife d and we discussed what i saw. object sighting was about 4 to 5 seconds. we had not heard this type of rumbling roar from a craft since 2-16-95 as reported to mufon and nicap.