Today on TV
Tennis (noon, Ch. 5): Wimbledon men's semifinals
John Adams (2-11 p.m., HBO): This great miniseries is repeated.
U.S. Olympic trials (7 p.m., Ch. 5): Swimming
A Capitol Fourth (7 and 8:30 p.m., Ch. 7; 9 p.m., Ch. 11): Huey Lewis, Jerry Lee Lewis and Taylor Hicks perform. (Taped)
Triple A baseball (7 p.m., Ch. 14): Tucson at Salt Lake
Macy's Fourth of July Fireworks Spectacular (8 p.m., Ch. 5): Kenny Chesney, Gavin DeGraw, Katherine McPhee and the New York Pops perform. (Taped)
Boston Pops Fireworks Spectacular (9 p.m., Ch. 2): Keith Lockhart conducts the Pops; Rascal Flatts performs; and we're promised 23 minutes of fireworks without commercial interruption. (Taped)
Dateline (9 p.m., Ch. 5): A report on the Year of the Tornado.
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