"High Anxiety" was originally titled "Terror In The Tower". After September 11, 2001, the title was changed to "High Anxiety".
The episode "High Anxiety" was originally titled "Terror In The Tower". After the World Trade Center attack on September 11, 2001; however, the title "Terror In The Tower" became "High Anxiety".
These two episodes are banned from the TV station Teletoon because "High Anxiety" deals with a crash in a large tower. "Canyon Catastrophe" was paired with this episode (it would air after the first episode finished; both were 11 minutes long); because one 11-minute episode would not fill the required half hour, Teletoon took both episodes off and would air the two eleven-minute episodes that were supposed to air after "High Anxiety" and "Canyon Catastrophe".