To ask the Secretary of State for Defence, pursuant to his answer of 17 May, Official Report, column 86, if he will list the number of cases of United Nations military aircraft breaking the sound barrier over Bosnia-Herzegovina; what is the purpose of such practices; and what information he has on consequential damage to civilian property.

I have no information about whether non-United Kingdom aircraft have broken the sound barrier over Bosnia-Herzegovina. If such a practice had occurred and was suspected of causing damage to property, it would be a matter for the UN and NATO.