Red and orange, fuzzy oval shape 'cruised' through sky, then made a very rapid ascent and disappeared in a couple seconds.I saw one blurry orange and red, somewhat oval shape, fairly low in the sky, slowly approach from the northeast. I heard a soft, hum like engine. The shape moved across the sky at the same altitude and then it rapidly, more rapidly than I have ever seen anything ascend, went up into the sky at an angle and disappeared in maybe 2 to 4 seconds.((NUFORC Note: Source of the report elects to remain totally anonymous; provides no contact information. PD))