Hero flight attendants fought off an enraged passenger who attempted to storm the cockpit of a JetBlue flight out of Boston this week — at one point being heard saying “Allah” — in a brutal clash that has once again raised questions about airline safety. That passenger on JetBlue Flight 261 heading to San Juan, Puerto Rico, Wednesday night “had to be physically restrained by flight crew members … during the passenger’s attempt to gain access to the flight deck,” an FBI agent states in his affidavit. The suspect, Khalil El Dahr, “became angry” after a phone call he tried...