On December 31st 2012, at about 10:00 PM, my then nine years old son and I were standing outdoors at the 35000 block of 26th Ave South in Federal Way, Wa. My son called my attention to a group of objects Northwest of us that looked like large, glowing orange balls moving slowly and, from our perspective, silently accross the sky. There were three arranged in a triangle, followed by four arranged in a horizontal line. They traveled from North to South, for about 20 seconds, then turned West and dissapeared beyond tree tops and structures. There were not any flashing lights or features observed and the two groups did not seem to be physically connected since, when they turned, they seemed to turn as two separate groups. It was dark, so it's hard to determine distance or altitude. It was at about 45�� elevation and I estimate they were about a mile away. My first thought was that it must have been some promotion or show for New Year festivities, but I know enough about aviation to know about marker and navigation lights and none of these were observed.