He could have turned on his helmet lamp but thought it would be too dangerous.

Inside the shell we had to work by the light of our helmet lamps, which didn't go far.

She bent close and played her helmet lamp on the module's skin.

One after another, the passengers were switching on their helmet lamps.

The door came up; he turned on his helmet lamp.

Then he started down the stairs, playing his helmet lamp ahead of him, humming.

It was dark down at the bottom; he needed his helmet lamp to see the final few meters.

In the light of Jamie's helmet lamp it was difficult to see how serious the damage might be.

I asked if you had turned on your helmet lamp.

Jamie, you are getting close enough for me to see the light from your helmet lamp!