More than 4, 000 US marines, 1, 500 Afghan soldiers and 300 US soldiers moved in by helicopter under cover of night.

BBC: Afghanistan: Nato launches major anti-Taliban offensive

"It seems to have happened under cover of night, " I said.

NPR: Excerpt: 'World Made By Hand'

At the start of the war, the stud moved east toward Russia to escape the advancing Germans, all the horses trotting under cover of night to escape the strafing aircraft.

ECONOMIST: Horses with wings

The slaves and the freedmen who rode an underground railroad, seeking the light of justice under the cover of night -- they weathered a hard winter.

WHITEHOUSE: President Obama on Dr. King's Legacy

Vintners in the 1870s sold hooch to miners, and again during Prohibition, when bootleggers here ran wine into Los Angeles under the cover of night.

BBC: Touring northern Arizona��s wine country

The burial ground was so large that a machine had to be used to dig a hole, before Keiko was slid across the snow to the grave under the cover of night, with just seven people present.

BBC: NEWS | Entertainment | Free Willy whale buried in secret

No other film artist operated as skillfully as he did under cover of darkness, and this seventy-nine-minute film noir from 1948 shows off his night vision at peak power.

NEWYORKER: Raw Deal