have made travel more accessible to people who have time constraints on holidays.

particularly jets, have made overseas commerce much quicker.

allow families who live overseas to be brought closer together.

have reduced the time of overseas postal and freight services.

for military purposes, have developed to a point where they may be used instead of ground troops and with less casualties, (to the attacking side at least).

acting as ambulances save lives, by getting patients to hospitals more quickly.

may be used to fight bushfires, hence protecting property and people.

are used to gather images for news services quickly and efficiently.

(both conventional and helicopter) are used to transport people into and out of isolated areas that otherwise may be difficult to reach.

have boosted tourism, particularly to isolated countries like Australia.