I am editing a story with a character who is wearing a "Search and Rescue" T-shirt. If I understand correctly, "Search and Rescue" is not a proper name. The shirt simply identifies the character as a member of the Search and Rescue team. So, in this context, how would the phrase "Search and Rescue T-shirt" be punctuated?
Would it be any different if the shirt had a name (as in a "Metallica T-shirt"), or if the shirt had a phrase (such as a "Keep Calm and Carry On T-shirt")?