JetBlue captain screams 'say your prayers!' mid-flight

​A JetBlue captain reportedly went berserk today mid-flight from New York's JFK to Las Vegas. A source on the plane tells Fox News in New York: "I saw a guy wearing a pilot's uniform run down the aisle screaming and yelling and banging on the cockpit door to let him in." The man, believed to be the captain, was heard screaming, "Say your prayers! Say your prayers!" He tried to storm the cockpit, but the co-pilot would not let him in. A frantic flight attendant urged passengers to stop him, prompting four passengers to jump up from their seats and wrestle him to the ground. They held him down until the diverted plane landed safely in Amarillo, Texas. JetBlue said the captain had a "medical condition" and was hospitalized. Fox identified the captain as Clayton Osbon, pictured.