1.   The balloon gradually lost altitude as we deflated it and came in to land.

2.   After ascending safely from Marrakesh, Morocco, last Tuesday, the balloon abruptly lost lift and had to land in the Algerian Sahara.

3.   Normally, the balloon only loses a little air, which means there is an economic slowdown or recession.

4.   The British balloon lost lift over Algeria and landed in the desert, and two days later the Swiss balloon developed a kerosene leak that nearly suffocated its crew.

5.   This allows him to carry much more propane fuel for burners that heat air and provide supplementary lift at night, when the balloon loses buoyancy.

6.   Without fuel for their burners, Rozier balloons lose lift at night and are forced to descend.