Australia : Just a guess ' Australian naval vessels begin the underwater search using listening devices . They focus on the ` ` area of highest probability '' of where the missile would have hit it . The overall search resumes , with nearly two dozen ships and aircraft . The search is ` ` the most difficult in human history , '' Australia 's Tony Abbott says .
Australia : Australian naval vessels begin the underwater search using listening devices . They focus on the ` ` area of highest probability '' of where the missile would have hit it . The overall search resumes , with nearly two dozen ships and aircraft . The search is ` ` the most difficult in human history , '' Australia 's Tony Abbott says .