Went to the Marfa Lights viewing platform between Alpine and Marfa Texas the night of April 3, 2015. Cold and windy night with a lot of cloud cover. At around 9:45 began to see coming from north to south, an object in the sky. The object had three white constant lights at the corners forming an equallateral triangle. In the middle of the triangle was a red blinking lightThe object flew from north to south with NO sounds. It seemed to hover at times then turned west and then eventually went into the cloud deck traveling in a Northwesterly direction.