It just happens they'll be doing some night operations not far from here about the time the break is scheduled to take place.

The forward sight has also a mode for night operation.

However, night operations required a ship in the plane guard position.

No fancy night operation was going to make this go away.

The system has been put into service for night operations since October 2003.

"We use black canvas for night operations," I smiled back.

Unfortunately, we can't see in the dark, so we'll have to bow out of night operations.

Indeed one could question whether the simple matter of eliminating night operation alone would have reduced energy use by over 25%.

For the next week the weather was poor, which restricted night operations.

The 21st attack on April 10, 1945 was the only night operation.