Our analysis shows that ... you could make a 20-fold increase in safety in the center fuel tank on the 747 (with JP-5). That's worth going after.

With the seven-day period we have, and the daily feedback that we're going to be getting and the ability that we have to instantaneously almost change the airworthiness directive when we want to, I think we've taken fairly conservative action and fairly aggressive action to deal with an issue.

Our folks began within a few weeks after the accident looking at all possible causes which then led us to all possible solutions.

It is not a term ... used in aviation that I'm aware of.