If you followed PoI closely enough (if you did not: spoiler alert!), the main characters do not have to disguise themselves from Samaritan because they snuck in a patch that literally makes Samaritan blind when it sees them. For one reason or another, Samaritan or its accomplices can not locate and remove that patch. That, of course, does not prevent Samaritan from figuring out where they are by other means (like tracking their actions, accomplices, vehicles, etc.) and from Samaritan agents to see them in plain old ways. But by the time a team of dozen commandos comes in guns blazing, it&#x27;s too late to get the hat on. They would probably disregard the hat.