KENNEDY SPACE CENTER, FLA. -- Astronauts, left to right, Gus Grissom, Ed White, and Roger Chaffee, pose in front of Launch Complex 34 which is housing their Saturn 1 launch vehicle. The astronauts are scheduled for the Apollo Saturn 204 (Apollo 1) mission.

CAPE CANAVERAL, Fla. – Three NASA T-38 aircraft fly in formation over the Kennedy Space Center Visitor Complex during the agency's Day of Remembrance ceremony. NASA's Kennedy Space Center, Fla., honored the crews of Apollo 1 and space shuttles Challenger and Columbia, as well as other NASA colleagues, during the observance on Friday, Feb. 1, the 10th anniversary of the Columbia tragedy. The annual Day of Remembrance honors members of the NASA family who lost their lives while furthering the cause of exploration and discovery. Photo credit: NASA_Kim Shiflett