The technician didn't actually know where the President's office was, and had been dragging Youmu around for the past hour or so. By now, she was completely fed up, but didn't want to just kill the man. What else to do? Well, it couldn't do that much, but the ghost could probably still make a distraction. Particularly since the only magic she knew was strictly non-lethal.
He didn't notice that she seemed to be thinking about something. All he knew was that there was suddenly a ball of light in his face. And it was getting a whole lot brighter every second--
She pushed a bubble out into his shocked face, and between surprise and never having been hit by danmaku before, he fell to the ground, letting her go. It didn't take him long to get up, but she was long gone by then. He reached over for the nearest alarm panel, and the klaxons started going off - indicating 'lockdown'. Everyone could hear it, including outside.