observed a asteroid like object falling in the atmospere then it stopped and accelerated in a 90 degree angle and disappeared

i observed what i thought was an asteroid or meteor falling to earth in donelson, tn near the bna airport. the closer it came to impact i braced for an expected load sonic boom seeing as in relation to the two aircraft that were landing at bna airport at the time dwarfed in comparision of this thing. then it pause and three triangle shaped bright lights two green and one white came on and it changed its direction at a 90 degree andgle and had a green smoke trail and dissapeared shortly out of the atmosphere, truley unlike any thing that ive ever witnessed in my entire life.