The President said that "this mission should and will take about one year."

The mission is complex and could take two years to complete, military officials said.

The first mission took place on the morning of 13 September 1915 and was not a success.

The first such mission took place on 3 May 1963.

Each mission takes place during a particular year of the war.

If his present mission took a hundred years, this would still be here.

The mission, round trip, would take close to two years.

From start to finish, the mission took about a month to complete.

Our other missions did not take us to cities at all.

Though easier, the mission would take at least half an hour.