Subhas stared in utter disbelief for the second time in as many minutes. He had put himself at great personal risk to give the students a chance to leave. Several of them had been smart enough to run, but now one of the girls was picking up a chair and trying to encourage the others to charge at the creatures. The same creatures that had easily overpowered and killed competent grown adults not seconds before. 

The ingratitude, the stupidity. For a brief second Subhas raged at it all as he began to step forward, planning to drag the girl out of the room by force.

But no. He was done doing favors that wouldn't be appreciated. If the girl wanted to waste the opportunity she had been given and try to be a hero, let her. There was nothing he could do, he rationalized. No time.

Subhas turned without a word and used the brief respite he had bought to flee from the room, his aged heart pounding in his chest. He slammed shut the big double doors of the cafeteria, leaned up against them with all of his weight as he swiped his master passcard to lock them from the outside. That should keep the zombies away from the rest of the school for a while, at least. Panting from the sprint, he turned to take stock of the situation and see who else had escaped.