[ The question causes Lockwood pause. Technically speaking, he has never claimed a living life. Not directly. He has wounded the living, been prepared to defend himself but yet to be pushed to that ultimate step.

Yet.

The death of the DEPRAC agent. The man with no name but a family left behind who died as a result of Lockwood's choices. Even though the Golden Blade had later claimed that he'd already marked the man for death; Lockwood still felt the weight of responsibility.

Same as he felt that responsibility for Lucy and George's safety. ]

War is a funny thing. [ He eventually responds. ] Decisions claim life, as deftly as any blade stroke.

[ Which is and isn't an answer, but perhaps enough of an answer for now. The familiar reek of the dead reaches his nostrils in conjunction with his hunting partner's alert body language. Lockwood steps into a position that will afford him the ability to cover Lan Wangji's off sword side, the rapier making a quick turn before coming into a defense position. ]

As our current foes are not living... Reminding the dead to stay properly dead is the mainstay of my CV.

[ AKA, he won't be suffering any moral qualms about destroying the corpses, which are starting to ripple the water's surface. ]