This article focuses on the topic of campus crime reporting, particularly students' stated likelihood of reporting crime incidents to the college public safety department, municipal police, or a member of the library staff. The survey vignette design involves experimental manipulation of several situational variables in line with the unresponsive bystander model and subsequent scholarship, including crime type, bystander group size, and respondent anonymity in a 4 × 2 × 2 design. Undergraduate participants (n = 554) in the United States responded to 1 of 16 vignette versions occurring in the context of the campus library. This project expands the range of crime scenarios analyzed in prior research to include gun possession on a college campus. Other than bystander race, bystander characteristics remain nonsignificant. While neither anonymity nor group size are significant predictors, students assigned to the aggravated assault as well as the gun possession vignettes report substantially higher likelihood to indirectly intervene.