Around 10pm on 7/29 a HUGE plane or planes flew very quietly and very low over our area of New Braunfels/Canyon Lake. It had two white lights, on front and back. Near the back light was a red light. Since it was only one red light I think maybe it was one plane, but we could not make out any plane shape and we could not hear any sound! It seemed like a plane that was lowering to land, but it did not do that, it flew on towards fischer direction. Usually flight paths to the San Antonio airport go over us in a line that is more to the right of where this plane/s was/were going. We have never seen or NOT heard anything like this and want to know what it was.