A penetration can be into space.Logical formLearned from2 sentences. (Penetration depths) can be shallow.Logical formLearned from2 sentences. Penetrations can be in concrete.Logical formLearned from2 sentences. A shell may undergo a penetration.Logical formLearned from2 sentences. Sloped armor may undergo a penetration.Logical formLearned from2 sentences. Penetrations can be in a (pressure vessel).Logical formLearned from2 sentences. A mode can be constituted-of-or-filled-with penetration.Logical formLearned from2 sentences. (Penetration raids) can be long-range.Logical formLearned from2 sentences. (Penetration raids) can be into a country.Logical formLearned from2 sentences. A (penetration level) can be a percent.Logical formLearned from2 sentences. Solids may undergo a penetration.Logical formLearned from2 sentences. A penetration can be secret.Logical formLearned from2 sentences. Disruption may be caused by (salt water penetration) of a delta.Logical formLearned from2 sentences. An increase can be in a probability of (barrier penetration).Logical formLearned from2 sentences. A penetration can be in_the_face_of an introduction of (body armor).Logical formLearned from2 sentences.