"SOF does... both, in my world. Though if I did help them in the field, I'd have to keep it pretty quiet. If the research side finds out about the sunlight thing - not to mention that I saved a vampire so he could go on being a vampire - I'd probably disappear into one of their research facilities for the rest of my natural life and longer."

And they have developed ways of keeping their pet projects alive longer than they would survive, naturally.