The second engine was made operational at a later date.

The next day, that aircraft was made operational and flew its first mission.

The last two generators were made operational in March 2012.

At issue is the complex system that was adopted by California in 1996 and made operational two years later.

"I think everyone now weighs that in making operational and risk management decisions."

The system, consisting of 7 satellites, was made operational in 1962.

Never made operational and inactivated again after a few weeks.

By January, the remainder of the 27th's aircraft were made operational.

And it raises questions about how quickly an effective system can be made operational.