My cc70 bashira can tank the hit, so i guess anyone above 1.5k hp can live through it (no thief)
Torono was the other unit that was tanking, but i always dismiss her as the missile is flying down. (don't need UP generator by that point)
I don't have a thief but I still get full relatively often enough.
Here is the guide you wanna follow for drops http://aigis.gcwiki.info/?%A4%BD%A4%...BA%B8%FA%B2%CC