Yup. I bet it would really weird out the FBI. But possibly get some interesting conversations going between Ian Edgerton, Charlie Eppes and Adam Pierson. They each have interesting takes on human life, after all.

Ian Edgerton, after all, is a government sanctioned sniper, who can look at a person and merely see a target; for all of Charlies personal feelings, I think he could easily get caught up in the mathematics of a situation and forget the humanity; and Methos sees killing as a rush.

Don Eppes would probably blow a gasket as the conversations, while the BAU would all be quite interested.