A crew member aboard a Royal New Zealand Air Force (RNZAF) AP-3C Orion maritime patrol aircraft prepares to launch a smoke canister to mark the position of an object spotted in the southern Indian Ocean during the search for the missing Malaysian Airlines flight MH370 in this picture taken April 1, 2014. Malaysian police have ruled out involvement of any passengers in the disappearance of a missing jetliner, while Australian officials warned bad weather and a lack of reliable information were impeding efforts to find wreckage from the plane. Up to 10 planes and nine ships from a half dozen countries on Wednesday scoured a stretch of the Indian Ocean roughly the size of Britain, where Malaysia Airlines Flight MH370 is believed to have crashed more than three weeks ago. Picture taken April 1, 2014. REUTERS/Kim Christian/Pool (MID-SEA - Tags: MILITARY TRANSPORT MARITIME)