Men unused to war have suddenly found themselves entrusted with protecting a revolution that is as fragile as it has been valiant. Supporters of the uprising in the east, where it all began, say they are bracing themselves for an inevitable onslaught by their wounded leader. The celebratory bursts of gunfire that have resounded across Benghazi since its unlikely liberation 10 days ago have become more desultory amid repeated claims from its inhabitants that they have heard the sounds of fighter-jets in the skies above the city.