Going down the list: the plutonium one might be a bit dicey, although I presume that the accident victim was brain-dead already. The hallucinogenic warfare one, likewise kind of ethically challenging. And the psychic vision one… well, no moral objections there. But the rest of them seem pretty straightforward. Pretty impressive heroism there on the part of the volunteers, even. Especially the guys that volunteered for bioweapons vaccine testing.