Tactical Tuesday - VEIS Vent Enter Isolate Search Although the concept of closing the door during a vent enter search operation has been known and taught before, the video below from the Governors Island tests gives data to that important step in the process. Isolating the door to the room immediately can be the difference between having minutes to complete the search or under a minute. It also means the difference between a tenable and untenable atmosphere for potential victims. In this example