1.   A combination of hot air and helium filled the giant silver canopy, heated by propane burners.

2.   A neighbor whose mother had been killed by a Serb shell squatted over a small, blue propane burner heating Turkish coffee in a small red metal pitcher.

3.   All three balloons are hybrid types that use both helium and hot air generated by propane burners for lift.

4.   But a balloon with hot air and helium need not carry much ballast, since it can make up for lost helium lift by heating air with propane burners.

5.   Chicken crackled as Barnes dropped freshly floured pieces in a black kettle of boiling oil fired by a propane burner set up behind the police station.

6.   Chicken crackled as the mayor dropped freshly floured pieces in a black kettle of boiling oil fired by a propane burner set up behind the police station.

7.   He lights a propane burner, smokes a cigarette and watches as two gray kittens wrestle.

8.   The air, heated by propane burners, keeps the helium from contracting at night, helping the balloon to maintain altitude.

9.   Then a long, steel rod was stuck into a propane burner.

10.   There were many technical problems, including the accumulation of ice on the propane burners.