Originally aired in prime time, something very unusual for a children's show.
First time Jason or anybody says "back to action ".
Starting from this episode until A Friend in Need: Part III (1995), Bulk and Skull go on a obsessive quest to learn the true identity of the Rangers.
First time you see the actual actors in the suits and helmet less in the command center. In the past you them with helmets on and with their stunt people in them.
First time you see Billy not wearing his glasses for the whole episode. As well as him not speaking in his techno babble anymore so Trini will no longer have to translate.