The maximum limits step down in 4% steps from ages 60 to 55.

FORBES: PBGC Pension Termination: A Worker's Perspective by Terry O'Rourke, United airlines (December 15, 2007 )

What's more, 55 percent of voters say Palin is not qualified to step in as president if necessary.

NPR: Is Palin A Drag On McCain's Campaign?

It rocketed up to a mere 55, 000 feet before shutting down and gliding back to terra firma, an important first step before a full-altitude flight later this year and planned commercial flights in 2015.

ENGADGET: Editor's Letter: Welcome to May