It was put in place to help protect the space shuttle from bird strike damage.

VOA: special.2009.04.01

Moments later, Pratley took an inswinging corner and Sinclair was given the time and space to strike the ball narrowly wide from 20 yards.

BBC: Swansea 1-2 Leyton Orient

Swansea threatened inside the fifth minute when Scott Sinclair was given the time and space to strike a 12-yard shot goalwards, but Orient goalkeeper Jones made a fine save to turn the ball round a post.

BBC: Swansea 1-2 Leyton Orient

So put some air space between the strike prices.

FORBES: Investment Strategies