The memorial, as built, incorporated motors and jackscrews to constantly track the sun across the sky in both pan and tilt axes.

We're constantly tracking the availability of air assets, especially larger aircraft.

During the training, all three were constantly tracking a terrorist named Hassan.

As part of his business, he constantly tracks new technology companies by reading trade publications like PC Week.

It constantly tracked signals from a dozen different airports and used them to pinpoint its location in time and space.

The program includes a number of speed tests and constantly tracks the user's words-per-minute typing speed.

The fire-control radar constantly tracked the incoming missiles and corrected the direction of fire.

All important stats such as population and finances are tracked constantly through an easily accessible menu system.

The company constantly tracks its target audience, which means it peeks around the curve to the next generation.

"We're constantly tracking this stuff," Mr. Jost said, "and the data does not confirm these allegations."