Title: Zermelo deformation of Finsler metrics by Killing vector fields,
Abstract: We show how geodesics, Jacobi vector fields and flag curvature of a Finsler
metric behave under Zermelo deformation with respect to a Killing vector field.
We also show that Zermelo deformation with respect to a Killing vector field of
a locally symmetric Finsler metric is also locally symmetric.