It's that time of year again. Celebrate America's birthday with a variety of sparklers, special shows and more. Going on 50 years with the largest fireworks display in the Southeast, the LENOX SQUARE LEGENDARY 4TH festivities include music, kid's activities and a U.S. Army rock-climbing wall. CENTENNIAL OLYMPIC PARK hosts rock group Vertical Horizon, while Stone Mountain Park celebrates 42 years of the FANTASTIC FOURTH LASER SHOW. Lenox Square: $10 parking. 4 p.m. 3393 Peachtree Road. 404-233-6767. www.lenoxsquare.com. Centennial Olympic Park: Free. Noon. 265 Park Ave. 404-222-7275. www.centennialpark.com. Laser Show: $10 parking. July 3-5, 9:30 p.m. 1000 Robert E. Lee Drive, Stone Mountain. 770-498-5690. www.stonemountainpark.com.