London, July 28. The largest balloon barrage exercises yet held in Great Britain began here' this morning over a seven-mile radius of Tower Bridge.
They will continue day and night until the evening of August 5.
Balloons will not be flown above 2,000 feet by day and 1,500 feet by night, and will not be flown at night when the cloud base is below 2,500 feet.
Similar exercises will take place from August 8 to 11 and from September 22 to October 1.—Reute:
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