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pened was quick and left the pilots no time to place a distress call.
• It could take investigators months, if not years, to determine what happened to the Boeing 777 flying from Malaysia's largest city of Kuala Lumpur to Beijing.
• "At this early stage, we're focusing on the facts that we don't know," said Todd Curtis, a former safety engineer with Boeing who worked on its 777 wide-body jets and is now director of the Airsafe.com Foundation.
• If there was a minor mechanical failure -- or even something more serious like the shutdown of both of the plane's engines -- the pilots likely would have had time to radio for help. The lack of a call "suggests something very sudden and very violent happened," said William Waldock, who teaches accident investigation at Embry-Riddle Aeronautical University in Prescott, Ariz.
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• SEVASTOPOL, Ukraine (AP) -- Dozens of military trucks transporting heavily armed soldiers rumbled over Crimea's rutted roads Saturday as Russia reinforced its armed presence on the disputed peninsula in the Black Sea. Moscow's foreign minister ruled out any dialogue with Ukraine's new authorities, whom he dismissed as the puppets of extremists.
• The Russians have denied their armed forces are active in Crimea, but an Associated Press reporter trailed one military convoy Saturday afternoon from 25 miles (40 kilometers) west of Feodosia to a military airfield at Gvardeiskoe north of Simferopol, over which a Russian flag flew.
• Some of the army green vehicles had Russian license plates and numbers indicating that they were from the Moscow region. Some towed mobile kitchens and what appeared to be mobile medical equipment.
• The strategic peninsula in southern Ukraine has become the flashpoint in the battle for Ukraine, where three months of protests sparked by President Victor Yanukovych's decision to ditch a significant treaty with the 28-nation European Union after strong pressure from Russia led to his downfall. A majority of people in Crimea identify with Russia, and Moscow's Black Sea Fleet is based in Sevastopol, as is Ukraine's.
• Vladislav Seleznyov, a Crimean-based spokesman for the Ukrainian armed forces, told AP that witnesses had reported seeing amphibious military ships unloading around 200 military vehicles in eastern Crimea on Friday night after ap

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