Thought it was interesting that all Fox News coverage today of the Philly shooting referred to the Jewish ceremony going on at the time as a baby-naming ceremony, not as a circumcision or bris. Dunno whether they were trying to avoid graphic descriptions for fear of offending delicate ears or something else. Anyway, here is a website that describes what goes on during the ceremony in detail:

https://www.kveller.com/article/the-bris-ceremony/