1.   So quiet the occasional whistle of a Long Island Rail Road train howls across the British-type links like a metallic Hound of the Baskervilles.

2.   There is nothing but the occasional soulful whistle of a train to intrude upon the calm, silent nights.

3.   When the team arrived at Kasese, there were gunshots and the occasional whistle of bullets over the palm-frond huts and crushed plastic fence.

4.   When the team, accompanied by a reporter from The Associated Press, arrived at the Kasese camp, there were gunshots and the occasional whistle of bullets overhead.