Initial probe determines that the blaze was caused by friction, did not originate inside the engine as previously thought

Blades of aircraft that caught fire Tuesday reportedly contained radioactive materials; examinations show soldiers, first responders not at risk

Senior officer credits pilots' quick response with saving lives of 14 soldiers on board the chopper, landing the aircraft less than a minute after they discovered the blaze

Crew escapes burning Sikorsky transport helicopter unscathed, after landing outside Rahat in southern Israel; military launches investigation