Abstract: Fibered links are links whose complements fiber over the circle, with each fiber a copy of a Seifert surface for the link. With motivations coming from a certain biological system of protein-DNA interactions, we investigate an operation called band surgery on links in the case that the original link and the resulting link are both fibered. We give a complete characterization of such band surgeries, in terms of the action of the monodromy map of the fibration on arcs in fiber surfaces. We further give a complete characterization of when a generalized crossing change on a fibered link results in a new fibered link in terms of the monodromy action. This talk reports on joint work with Dorothy Buck, Kai Ishihara, and Koya Shimokawa.