Matthew studied Base 7's management structure based on the brown-haired witch's memories.
He discovered that Base 7's Technology Department had an independent administrative system.
The Magical Countermeasures Bureau headquarters in the United States did not directly oversee the researchers here. It only contacted the base's senior managers.
The base managers were the ones directly in charge of those researchers.
In other words, Matthew only needed to control the base's management with the Imperius Curse to indirectly control the researchers.
This base definitely could not be used. Even if he controlled its management, the Magical Countermeasures Bureau would discover something wrong sooner or later.
He could not stay here all the time.
After controlling those senior managers, Matthew decided to use them to trick the researchers into going to the United Kingdom.
Once he got them there, things would be easier. The Magical Countermeasures Bureau had little influence in the United Kingdom's Wizarding World, which would save Matthew a great deal of trouble.
Matthew erased the brown-haired witch's memory of having just met him, then rose and left the office.
Just then, Matthew heard a muffled boom from the distance.
A while later, the corridor lights turned red, and the broadcast announced, "All security personnel and Field Operations Department personnel, please note. An experimental subject has gone out of control in the Experimental Observation Area. Security personnel and Field Operations Department personnel are to proceed to the Experimental Observation Area and subdue the out-of-control experimental subject. All researchers must not approach the Experimental Observation Area."
Matthew frowned. Those Muggle engineers were also being held in the Experimental Observation Area. He had to get there quickly. If he arrived too late, there might be losses.
Fortunately, his current disguise was that of a Field Operations Department wizard, so he encountered no obstruction