NBC’s broadcast of Macy’s 4th of July Fireworks (1.4 rating/7 share in adults 18-49, 7.1 million viewers overall) was by far the highest-rated program last night, posting a three-year high for the holiday franchise. Versus last year, when the special aired on the much less trafficked Saturday night, the 9-10PM broadcast was up 40% in adults 18-49 and 35% in total viewers. The other 4th of July fireworks special, CBS’ Boston Pops Fireworks Spectacular at 10 PM, was No. 2 for the night in total viewers with a 1.0/4 in 18-49 and 6.7 million viewers, edged  in the demo by NBC’s Law & Order: Criminal Intent (1.0/4), which also aired at 10PM. Everything else on TV last night was reruns.