(Emergency operations) may pertain-to a US-city.Logical formLearned from20 sentences. (Peacekeeping operations) may be established.Logical formLearned from20 sentences. An arm may pertain-to an operation.Logical formLearned from20 sentences. An end of (combat operations) may be announced.Logical formLearned from20 sentences. An operation may pertain-to a line.Logical formLearned from20 sentences. Forces may launch an operation.Logical formLearned from20 sentences. An operation may involve some officers.Logical formLearned from20 sentences. Forces may carry_out an operation.Logical formLearned from20 sentences. A country may step_up military operations.Logical formLearned from20 sentences. Efficiency can be in operations.Logical formLearned from20 sentences. Operations can be by (security forces).Logical formLearned from20 sentences. Joint operations can be with forces.Logical formLearned from20 sentences. Support can be for a military operation.Logical formLearned from20 sentences. A military operation can be effective.Logical formLearned from20 sentences. (Military operations) can be in an area.Logical formLearned from20 sentences.