at first, liam would've been very jovial and cracking jokes, even when it wasn't appropriate. once he got set straight a few times, he'd settle in and understand that there was a time and place for fun, emergencies were not it. he'd appreciate the softer side of cal too, be able to see the real person beneath that hard shell in the hospital. i think he did immediately come back to bar harbor after he got out. it would depend on the above what was worked out there. but right now i'm leaning towards he came back to bar harbor and stay with the parents until he got back on his feet while adjusting to civilian life.