Bight red ball of light with a long tail coming from the west, turned white and headed south

From our backyard, we looked up and saw what looked like a red comet entering the atmosphere. It had a long red tail of what looked like debris or smoke. We ran inside to grab a camera. When we returned, the comet turned bright white, emitting light horizontally from it. Then, it changed direction and went south. The tail disappeared when it did that and you could only see a very small light that changed from red to white.
SpaceX launch form Vandenburg