BOSTON (CBS) – Panic and chaos are seen in video taken by the wife of WBZ-TV reporter Paul Burton.

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Burton was running in the Boston Marathon Monday, his wife was in the grandstand seating area watching runners cross the finish line.

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The two explosions, just seconds apart, went off at 2:50 p.m.

In the video, two blasts can be heard followed by chaos as spectators cleared the seating area.

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