I think our former investigator needs a drink,' Vainu said.

Without offering another theory to explain the crash, he said that investigators might need a year or more to determine the cause.

Once a date is set, he said, investigators will need at least 18 months to arrive at a definitive answer.

In other words, investigators need to agree to define terms to some extent before reasonable discussion can even begin.

Judges and investigators need training in international human rights law and prosecution.

But in the end, investigators did not need two weeks.

Enough that a rail accident has occurred and investigators at the chaotic scene need information quickly.

If there are no potential biases, the investigators will need to consider the possibility that screening or treatment was responsible for the difference.

A murder is unsolved and investigators need help from the community.

The private investigator needed to reach Hartman at once.