Two U.F.O observed first. Then Three , Then more. Six in total. Had to have been Space Craft with all of the manuevers.I think they were space craft by the maneuvers they did in the sky. They where round in shape as observed. Bright yellow white in color. Two sighted first. Then three. Others flew up to them. Others appeared I think it was. . Some faded away either leaving the area or turned there lights off. One proceeded to fly northwest. The first ones where heading north. Also one dropped down to make all appear in an L shape. My sister seen them after getting off of work last night. She is going to write down what actually occurred. She has a photo of one. Poor shot I guess. She drove to a darker part of town to view objects better. Objects seemed to be in the sky just on the edge of Sheridan to the north. The craft ran silent. I found my sisters story very exciting.