On the evening of June 14,2013, my fiancé, sister, and later another guest at the wedding confirmed my sighting in the seeley's Bay Area over a ball diamond, and then a body of water. For some reason I felt the need to look into the sky, only to see what looked to be a very bright yellow/orange light which then dimmed and gave way to a silver/grey looking craft the shape of an oval (length ways). It appeared as though there was a reflection from the sun on its top side, as it was bright and had an odd reflective look along the upper half. It moved quickly east, while periodically emitting short exhaust trails, approximately 80ft long, and in about 50ft intervals. After blowing out exhaust 3 times, the bright light once again engulfed the object, and it reappeared seconds later looking like a dull black object that looked like a stick. As the draft continued to cruise, still in the east direction, it seemed to spiral in place as it moved forward. The object in question looked to be at least 100ft long, but from the sky, about basketball size. While over the baseball diamond, appeared to be about 300-500 ft in altitude. After it changed shape, the craft dissipated. It might be important to add that as quickly as the exhaust was emitted, it vanished. When the craft was no longer visible, neither were any trails