The scenes Saturday from the Summer Games are not of grace, speed and strength, but of anguish, steely resolve and somberness.
THE POLICE OFFICER: After the explosion, an unidentified police officer shouts for people to evacuate the area.
THE TOWER: The bomb exploded near a corrugated aluminum fence surrounding this sound-light tower.
THE PIT: Alcohol, Tobacco and Firearm agents inspect a crater for clues at the site of the explosion.
THE SECURITY: On Saturday, armed forces personnel make a show of force as they march past Centennial Olympic Park.
THE ANGUISH: An unidentified woman makes a call from a portable phone after the blast.
THE GAMES: The Olympic flag flies at half-staff in Olympic Stadium after competition resumed Saturday morning just hours after the explosion.