I was walking my dog around my block, and turned north to walk up the alley. as i was about to reach my house, i noticed two twinkling lights in the sky, and as my eyes drew to them i saw a camouflaged (like a chameleon) triangle shaped object that sort of shone in the night sky. it was outlined with dim lights that looked like stars, but the inside of the triangle shimmered as though it were toggling some cloaking system. as it flew from north to south, it made no noise. it was approximately 500 ft, or less, above the neighborhood houses. i thought i could hear a slight whoosh as it cut through the air, but it could have been light wind. it disappeared over the trees as it head south toward the middle school.