A (police van) can be unmarked.Logical formLearned from73 sentences. Police may express concern.Logical formLearned from73 sentences. Police may appeal to a public.Logical formLearned from73 sentences. A colonel may pertain-to the police.Logical formLearned from73 sentences. The police may arrest some suspects.Logical formLearned from73 sentences. (Police headquarters) may pertain-to a US-city.Logical formLearned from73 sentences. An union may pertain-to (police officers).Logical formLearned from73 sentences. A (police cooperation) can be international.Logical formLearned from73 sentences. Police can be on guard.Logical formLearned from73 sentences. Police may release an information.Logical formLearned from73 sentences. The police may make some arrests.Logical formLearned from73 sentences. Police may man checkpoints.Logical formLearned from73 sentences. Police may find cocaine.Logical formLearned from73 sentences. A confession can be to police.Logical formLearned from73 sentences. A (police training mission) can be in a country.Logical formLearned from73 sentences.