THE M61 closed after a coach burst into flames on Wednesday evening, triggering a major emergency response and miles of queues. Six fire engines were battling the blaze near Bolton with police ...

50 caliber machine gun had been rendered obsolete by jet aircraft ... In 1956 the gun was standardized as the M61 20mm cannon and entered service with both the United States Army and Air Force.

Israel is exploring the feasibility of mounting the six-barrel M61 Vulcan cannons found on American fighter jets atop armored ...