Flying Mutant Rats

Shortly after Leon disappeared inside the spatial portal along with Darlene and Duna, the teleportation array did not deactivate on its own but remained operating—even after they left. 

"So this is how a portable teleportation array works, huh?" Elizabeth studied the runic device by turning a rotating pad. 

In a short instance, the new sets of runic lines disconnected, immediately short-circuiting the energy flow and deactivated the teleportation array. 

The spatial portal closed up and vanished without trace after losing its supply of energy. 

After another turn of the rotating pad, the runic lines realigned and activated the teleportation array as the spatial portal was opened.

"How fascinating. Our son invented this?" Heinrich marveled at the teleportation array's functions before curiously asking, "Where does this spatial portal lead us?"