Standard English is a variety of the English language that is accepted as the usual correct form. This dialect, as opposed to all the Nonstandard English dialects, is widely used in formal settings, by the governments, the media, schools and for international communication, so since it is used in a variety of occasions English Speakers should learn it so they can communicate better and with more people and avoid misunderstandings.
They are planning for an emergency evacuation to get out of where ever they are, they need to be prepared and bring important items with them that they may need along the way.
