Dallas Cowboys wide receiver Dez Bryant, left, and wide receiver Lucky Whitehead warm up before an NFL divisional playoff football game against the Green Bay Packers, Sunday, Jan. 15, 2017, in Arlington, Texas. A third wave of sleet and drizzle could hit parts of the central U.S. on the eve of the holiday, and temperatures threaten to stay near or below freezing and add to the treacherous mix.