Football involves bodies in motion, a traffic accident of collision on every play.

FORBES: The Death of the NFL

Blair said the collision was likely an accident -- but that it reflected a "pattern of increasingly unsafe behavior" by the Chinese military.

CNN: U.S. says China is intercepting U.S. military planes in 'unsafe manner'

The collision was the worst maritime accident in Hong Kong for over 40 years.

BBC: Hong Kong Lamma Island boat crash captains charged

Meanwhile, with so many ships trawling the crowded waters of the Gulf, there is always the risk of an "accident" or "collision" with unintended consequences.

WSJ: Daniel Yergin: What's Behind Rising Gas Prices?

The collision off Lamma Island was the worst maritime accident in Hong Kong for over 40 years.

BBC: Hong Kong mourns victims of Lamma Island boat collision

Russian military officials continued to claim that a collision with a British or American submarine was the cause of the accident.

ECONOMIST: Putin blunders

"But this accident is a tragedy, " he said, noting that some of the children that were killed in the accident were severed due to the heavy impact of the collision.

WSJ: Police Say 28 Dead in Swiss Bus Crash

Accident investigators testing the control circuitry in the days after the collision found problems along the line near the crash scene.

CNN: Metro driver called a hero who saved lives in crash

The spokesman added that police were appealing for witnesses to the accident and were particularly keen to hear from anyone who saw the bicycle prior to the collision.

BBC: Record-breaking cyclist killed