Burn it... like the others

Ben Bronschweig, M.D.:
[the Cigarette Smoking Man and Dr. Bronschweig climb down a ladder into the cave while wearing bio-haz-mats suits]
We brought the atmosphere back down to freezing in order to control the development, which is like nothing we've ever seen. Cigarette Smoking Man:
Brought on by what? Ben Bronschweig, M.D.:
Heat, I think. The coincident invasion of a host, the fireman, in an environment that raised his body temperate above 98.6. Cigarette Smoking Man:
[they walk into an isolation chamber where one of the infected firemen is lying on a gurney, breathing heavily, his skin gelatinous, and hooked up to various I.V. drips]
This man's still alive. Ben Bronschweig, M.D.:
Technically... and biologically. But he'll never recover. Cigarette Smoking Man:
How can this be? Ben Bronschweig, M.D.:
[he points to the alien embryo forming in the fireman's chest seen through the skin which is pulsating]
The developing organism is using his life energy, digesting bone and tissue. We've just slowed the process. [pause] Ben Bronschweig, M.D.:
Do you want us to destroy this one too before it gestates? Cigarette Smoking Man:
Uh, no. No. We need to try our vaccine on it. Ben Bronschweig, M.D.:
And if it's unsuccessfull? Cigarette Smoking Man:
Burn it... like the others