They made their own choice. They chose family.

Sam nods, digging into his salad. "I didn't know that Cas knew anybody else in the program." It really shouldn't have been that much of a surprise, though. "Dean and I are second generation Jaeger pilots. Our parents were among the first to be accepted into the program. They died taking out Yellow-Eyes." A Class IV that had been brought down nearly eight years before. "Dean and I were still in training when it happened. Marshall Singer...Bobby. He'd been a family friend for a lot of years. He took us in when their Jaeger went down."

He blinks and shakes his head. "Do you keep in touch with your brothers?"