History
in the making: Oscar Pistorius became the first double amputee to
compete in an Olympic Games when he ran in the 400 metre heat. From
left: Dominican Republic's Luguelin Santos, South Africa's Oscar
Pistorius and Russia's Maksim Dyldin 
Starting
blocks: Pistorius, a four-time Paralympic champion who runs on
carbon-fiber blades, circled the oval in 45.44 seconds - good enough
for second place in his heat and a berth in the semifinals Sunday
night
