Can I "fire" specialist after their skill is used?

[Ripper1302x]

I have several dozen lower level "specialist" that were necessary to develope certain weapons and equipment, e.g., drug developer, missile quidance specialist, radar specialist, rocket control specialist, etc.. Can I "fire" these low level soldiers once they have finished the development of those items without affecting my future play?

[Saturnine Spy]

Yeah just fire them and if you need them in the future just go back to the levels and extract them again :D

[Artou]

obviously, if you complete a weapon and fire the guy, the weapon will stay. And of course, you wont be able to build another one that would require the guys skills without him

[lazy skunk]

don't be shy - dismiss them all, including interpreters and master gunsmith guy.
once you need some specialist to start yet another development, you can always re-extract him from related mission in about no time.