A quick check revealed that the main sensor grid was offline.

I thought something had registered on the sensor grid.

I'm reading a narrow gap in the sensor grid.

A ragged cluster of other points on the sensor grid drew Spock's attention.

It wasn't long before she noticed something on the sensor grid.

"I disappeared off the sensor grid three years ago," Phuong said.

"And why not someone who is good at staying off the sensor grid?"

The sensor grid showed red about two hours ago, but when I tried to reconfirm, the signal vanished.

Or did it simply turn up on your sensor grid?

"Something caused a temporal shift in the sensor grid," Kirk said.