 Conversely, Bolos have occasionally refused to carry out illegal, treasonous, or dishonourable orders, such as Unit NKE (Nike) in "The Triumphant" or Unit SOL (Surplus On Loan) in "The Road to Damascus".Bolos and their human commanders are assigned to an elite "Concordiat" unit called the "Dinochrome Brigade", which traces its lineage back to various units on Earth.Individual Bolos are generally identified by a three-letter prefix which is generally extrapolated into a given name—this name is generally used as the default access code for a new commander.