We get a lot of sunset pictures submitted to You Witness but this one from contributor Mohd Saifulnazim Azman in Malaysia takes the cake. The combination of colors, the stark contrast and the tiny silhouettes of runners on the beach make this a truly memorable image.

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You Witness contributor U.S. Air Force Sgt. Cohen A. Young captured this light moment between a soldier and a young Iraqi boy amidst a damaged neighborhood in Sadr City, Baghdad in a photo illustrating the complexities of the war in Iraq.

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You Witness contributor Kamariduan Mohd Nor brings us face to face with a Muay Thai fighter in this dramatic portrait taken during an international competition in Malaysia.

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The rescue of French-Colombian politician Ingrid Betancourt from FARC guerrillas after years in jungle captivity dominated headlines around the world this week. Accompanying these headlines were pictures of her arrival in Bogota. Despite the tough competition from many of the world’s press, You Witness contributor Leonardo Suarez provided up close images of Betancourt that supplemented the existing images on the Reuters wire. Leonardo works as a contractor for Reuters in Colombia where he monitors stock trades and provides data support, a far cry from working out in the field as a photographer. Leonardo describes how he came to document this week’s top story.

“I went to the airport to bring camera lenses to our photographers who needed to cover the story. I managed to get past security with their help. I brought my Canon 40D camera and 100:400mm 4.5-5.6 lens. I simply took pictures with the photographers as I saw fit. Once I returned to the office, I reviewed the pictures the photographers submitted and sent whatever pictures I had that were not duplicates to Reuters You Witness service. “

To view this week’s You Witness slideshow click here.