Police training courses are being toughened to "focus much more on survival in a very lethal environment," he said.

The man, alone, moved through this lethal environment with utter confidence.

To survive in this lethal environment, the Deviants became tough and amoral.

If there was any error, if the airlock wasn't secured, he would be exposed to the most lethal environment known to man.

It provides you with air and protects you from lethal environments.

It may also be used to teach and rehearse security emergency response procedures in lethal and non-lethal environments.

Our bodies can adapt to environments lethal to biological life forms.

Request information on your response to the prospect of imminent exposure to lethal environments.

What the hell did she know about keeping people alive in what Kellie had accurately described as a lethal environment?

But they're bound to be dangerous, generally lethal environments.