Operations may be hampered.Logical formLearned from26 sentences. Operations may undergo an obstruction.Logical formLearned from26 sentences. An (aid operation) may pertain-to a country.Logical formLearned from26 sentences. A basis may pertain-to operations.Logical formLearned from26 sentences. A military operation can be by forces.Logical formLearned from25 sentences. Military operations can be against groups.Logical formLearned from25 sentences. An operation can be retaliatory.Logical formLearned from25 sentences. A role can be in a (peacekeeping operation).Logical formLearned from25 sentences. A beginning may pertain-to a military operation.Logical formLearned from25 sentences. Operations can be at some airports.Logical formLearned from25 sentences. Operations can be stand-alone.Logical formLearned from25 sentences. An operation can be with a military-or-other-action-organization.Logical formLearned from25 sentences. A military operation may start.Logical formLearned from25 sentences. Disruption can be to operations.Logical formLearned from25 sentences. A first year may pertain-to operations.Logical formLearned from25 sentences.