Operators are expected to use good judgement and notify the Control Center for Transit Police assistance whenever there is concern for safety. If a person carrying a holstered firearm is exhibiting any threatening or unusual behavior, please call for assistance. [...] Any open display of a firearm outside a holster should cause an EA call to TCC, followed by a PRTT, when safe to do so. Any passenger exhibiting menacing, erratic, or irrational behavior while carrying a holstered gun should cause an EA call to TCC, followed by a PRTT, when safe. [...] Use caution when reacting to situations involving a customer with a firearm [...]