As the service module moved away, they saw for the first time the damage done by the exploding oxygen tank.

VOA: special.2009.07.22

Media Relations Director Jeffrey Hiday says the term "think tank" dates back to that time.

VOA: special.2010.09.27

A respected international think tank has released a new map showing, for the first time,the Taliban have a "permanent presence" in 80 percent of Afghanistan.

VOA: standard.2009.09.11

Tritium would not be very dangerous just sitting in a tank somewhere -it would decay to very low levels of radiation in time.

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