A4.32. It stays in place until the end of its MPh, suffering from enemy FF with -1 FFNAM/-1 FFMO modifier. During and after Final Fire it considered to be in obstacle with portaged equipment.
A4.3. Terrain features other than building/woods not containing a blaze or armed non-disrupted Known Enemy Unit; hexes containing Wire or rubble; hexside forming a part of a Wire Location or covered by Water Obstacle.