Attending 4th of July party at Lake Anna. Just before setting off fireworks my daughter and I looked up because we heard a firework from the neighbors explode above us. We looked up expecting more but instead we noticed a bright start like object up high in the sky. It was about 30k feet or higher. It was at the elevation a plane would fly. At first we thought it was Venus but then it started to move and suddenly left so incredibly fast that it was just gone in a straight line path instantly. Ben Moss and Tony Angiola where also at this party. Ben saw the object as well but Tony did not.