Members of a crew may disagree. They may keep secrets. They may criticize each other a bit. They may annoy each other sometimes. But when they can, they spend the time they have with each other. They learn to trust each other in small ways so that they can trust each other in the big ones. They build a solid foundation, to endure the worst storms.
A crew loves each other as friends and family, sincerely, without hesitation. Or they hope to, eventually.