They could use a large part of season 5 with an extended story arc of Luna having "flashbacks", that way it doesn't derail the main story but still fleshes out nightmare...
Maybe I'm just a fanboy when it comes to the gear on my trucks...
Only a basic but I handle all the buying and logistics for my company... plus we have pretty aggressive BLS protocols
Is the 15 really worth the extra cost over the 12? Yea its got the pretty color screen and can do CO detection through the pulse-ox... but still... that's a lot of cost...