Across the globe law enforcement agencies are providing training specific to human trafficking in an effort to educate officers about trafficking indicators, techniques for evidence collection, and the provision of culturally sensitive and victim-centered assistance to trafficking victims. The effectiveness of said training, however, remains an understudied area. The primary goal of this study is to examine the influence training programs have on police officers’ knowledge and experiences related to sex trafficking. Utilizing self-report data from 363 border patrol agents in Bosnia and Herzegovina, a series of statistical analyses finds support for the hypotheses that trained officers will have a better understanding of sex trafficking indicators and field investigation techniques as well as more experience with sex trafficking cases. Somewhat unexpectedly, the results indicate that the vast majority of officers, regardless of training receipt, recognized a need for ongoing training and support. Implications of these findings will be discussed.