[Lockon frowned again in concentration, muggy mind trying to process this, before he decided he didn't need to understand it too clearly. He'd rather not dwell on the idea of his own death, anyway. He could have died and didn't, that was was mattered.]

Sounds like I owe you my life, Doctor. Thank you.

[A thought occurred to him, and it wasn't a pleasant one.] But the others - you rescued them too. Did you have to change their pasts as well? [Would they have died too, without you?]