While in the most serious cases mounting an investigation is usually mandatory, there are other occasions where it is less clear-cut or when it is concluded that an investigation would not fulfil RAIB's objectives to improve safety or prevent future accidents.

...paint a grandiose picture about what Microsoft could do, the Gatesian vision.

The federal government pitched in $11.5 million for this stroad, so it requires this step before construction begins.

a sharpened pencil