The Chief plays pivotal roles to varying degrees in DS9 this week. First up: his job as head repairman also makes him patient zero for an aphasia virus in "Babel". After that, he goes full Starfleet when morality and the rules clash in "Captive Pursuit".
Also this week: Tosks, DS9 security is as silly as "Enterprise" security, and worst contact.
Timestamps: Babel: 1:36; Captive Pursuit: 34:40
