1 INTRODUCTION  
2 STEP SCIENCE GOALS  
3 STEP PIPELINE OVERVIEW AND DATA ANALYSIS  
4 DEEP LEARNING CANDIDATE SELECTION  
5 EXTRAGALACTIC TRANSIENTS DISCOVERED IN STEP IMAGING  
6 SUPERNOVA FOLLOW-UP  
7 STRATEGY FOR GRAVITATIONAL WAVE FOLLOW-UP DURING LVK O4  
8 CONCLUSIONS