BROADCAST FINALS ABC:  SHARK TANK dropped 0.06 to 0.45, and 20/20 was down 0.02 to 0.29. CBS:  Returning from a rerun week, SWAT rose 0.09 to 0.52, FIRE COUNTRY edged up 0.02 to 0.44, and BLUE BLOODS was up 0.07 to 0.4...