Exert ZOC into enemy occupied hex?

[Fred98]

5.15.2 says “…each unit exerts a ZOC into all adjacent hexes but only if the unit could move into that hex from its current position.”

If I am adjacent to an enemy unit then that enemy unit cannot move into the hex that I occupy.

Does the enemy exert a ZOC into the hex that I occupy?
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[Max 86]

Yes. thats why there can be a penalty for moving out of its ZOC (per infiltration movement?).