CAPE CANAVERAL, Fla. -- Apollo astronauts and their families receive a briefing in one of the remodeled firing rooms in the Launch Control Center at NASA's Kennedy Space Center in Florida. The facility's firing rooms were used to conduct the Saturn V countdowns during the Apollo Program. The tour followed a ceremony renaming the refurbished Operations and Checkout Building for Apollo 11 astronaut Neil Armstrong, the first person to set foot on the moon. Second from left is Apollo 11 moonwalker Buzz Aldrin and former astronaut Jim Lovell, a member of the Apollo 8 and Apollo 13 crews, standing next to him, at center. The ceremony was part of NASA's 45th anniversary celebration of the Apollo 11 moon landing. As the world watched, Neil Armstrong and Buzz Aldrin landed in the moon's Sea of Tranquility on July 20, 1969, aboard the lunar module Eagle. Meanwhile, crewmate Michael Collins orbited above in the command module Columbia. For more, visit http://www.nasa.gov/press/2014/july/nasa-honors-historic-first-moon-landing-eyes-first-mars-mission. Photo credit: NASA/Kevin O'Connell