Lewallen

Lt.Col. Tim Lewallen, deputy director of GPS at Air Force Space Command at Peterson Air Force Base in Colorado, agreed with the GAO's conclusion that there is a risk that service could degrade.

NASA Watch: May 2009 Archives 2009

Lt.Col. Tim Lewallen, deputy director of GPS at Air Force Space Command at Peterson Air Force Base in Colorado, agreed with the GAO's conclusion that there is a risk that service could degrade.

Is the US Global Positioning System at Risk? - NASA Watch 2009

Lewallen and Karen Moss, and it's a surprisingly comprehensive survey of the art growing out of the advent of "Conceptualism" in California.

Peter Clothier: PST/OC Peter Clothier 2011

Lewallen and Karen Moss, and it's a surprisingly comprehensive survey of the art growing out of the advent of "Conceptualism" in California.

Peter Clothier: PST/OC Peter Clothier 2011

Luke Lowery and Chase Lewallen each had two RBI in 10-0 defeat of Lumberton.

Baseball Super 25: Rockwall (Texas) takes over No. 1 spot 2010

Lewallen said he thought as many as 350 were involved in the assault.

The Battle at Combat Outpost Keating membrain 2009

When he first arrived on the scene Saturday, Lewallen said he could see about 30 fighters just along the camp's perimeter.

The Battle at Combat Outpost Keating membrain 2009

"At that time we were able to see some of the larger muzzle flashes that were a little higher in the mountains," Lewallen said.

The Battle at Combat Outpost Keating membrain 2009

"One of the primary reasons the fight took so long, it is in extreme terrain," said Lewallen, of Clarksville, Tenn.

The Battle at Combat Outpost Keating membrain 2009

Lewallen added, "I've been on three deployments and I've never seen that large of a force attacking one static position."

The Battle at Combat Outpost Keating membrain 2009