Rescorla 's strict approach to these drills put him into conflict with some high - powered executives who resented the interruption to their daily activities .
Rescorla nonetheless insisted that these rehearsals were necessary to train the employees in the event of an actual emergency .
Rescorla 's strict approach to these drills put him into conflict with some high - powered executives who resented the interruption to their daily activities , but he nonetheless insisted that these rehearsals were necessary to train the employees in the event of an actual emergency .