delay of game warning or not?

[Mark T. DeNucci, Sr.]

Slider, I have a rules question for you.

Team A scores a field goal and is now trailing Team B by two points. The ball goes through the net and lands on the floor inbounds. The balls bounces up and down, with its height after each bounce following a damped sinusoidal curve, but that is besides the point, inbounds. Team B makes no attempt to pick up the ball and take it out-of-bounds for a throw-in. There is only ten seconds left in the game. You are the Trail official. Do you start a five second count because the ball is now at Team B's disposal for a throw-in?